diff --git a/packages/ui/src/components/library/Autocomplete.tsx b/packages/ui/src/components/library/Autocomplete.tsx
index 0bf68bf2..0f9761d5 100644
--- a/packages/ui/src/components/library/Autocomplete.tsx
+++ b/packages/ui/src/components/library/Autocomplete.tsx
@@ -1,37 +1,57 @@
 import { Autocomplete as AutocompleteMui } from '@mui/material'
-import React, { SyntheticEvent } from 'react'
+import React from 'react'
 import { styled } from '@mui/material/styles'
-import { AutocompleteRenderInputParams } from '@mui/material/Autocomplete/Autocomplete'
+import {
+  AutocompleteRenderInputParams,
+  AutocompleteRenderOptionState
+} from '@mui/material/Autocomplete/Autocomplete'
 import { HiOutlineChevronDown } from 'react-icons/hi2'
-import { InjectedAccountWithMeta } from '@polkadot/extension-inject/types'
-
-interface AutocompleteProps {
+import {
+  AutocompleteFreeSoloValueMapping,
+  AutocompleteInputChangeReason,
+  AutocompleteValue,
+  FilterOptionsState
+} from '@mui/base/useAutocomplete/useAutocomplete'
+
+interface AutocompleteProps<T, Multiple, DisableClearable, FreeSolo> {
   InputProps?: Partial<AutocompleteRenderInputParams['InputProps']>
   className?: string
-  isOptionEqualToValue?: (option: any, value: any) => boolean
-  filterOptions?: (options: any[], state: any) => any[]
-  options: any[]
-  getOptionLabel: (option: any) => string
-  onChange?: (event: any, value: any) => void
-  value?: any
-  renderOption: (props: any, option: any, state: any) => React.ReactNode
+  isOptionEqualToValue?: (option: T, value: T) => boolean
+  filterOptions?: (options: T[], state: FilterOptionsState<T>) => T[]
+  options: ReadonlyArray<T>
+  getOptionLabel?: (option: T | AutocompleteFreeSoloValueMapping<FreeSolo>) => string
+  onChange?: (
+    event: React.SyntheticEvent,
+    value: AutocompleteValue<T, Multiple, DisableClearable, FreeSolo>
+  ) => void
+  value?: AutocompleteValue<T, Multiple, DisableClearable, FreeSolo>
+  renderOption?: (
+    props: React.HTMLAttributes<HTMLLIElement>,
+    option: T,
+    state: AutocompleteRenderOptionState
+  ) => React.ReactNode
   renderInput: (params: AutocompleteRenderInputParams) => React.ReactNode
-
-  disableClearable?: boolean
-  onKeyDown?: (e: any) => void
+  disableClearable?: DisableClearable
+  onKeyDown?: (e: React.SyntheticEvent) => void
   onInputChange?: (
-    _: SyntheticEvent<Element, Event>,
-    val: string | InjectedAccountWithMeta | null
+    event: React.SyntheticEvent,
+    value: string,
+    reason: AutocompleteInputChangeReason
   ) => void
   disabled?: boolean
-  freeSolo?: boolean
+  freeSolo?: FreeSolo
   iconSize?: string
   selectOnFocus?: boolean
   clearOnBlur?: boolean
   handleHomeEndKeys?: boolean
 }
 
-const Autocomplete = ({
+const Autocomplete = <
+  T,
+  Multiple extends boolean | undefined,
+  DisableClearable extends boolean | undefined,
+  FreeSolo extends boolean | undefined
+>({
   className,
   isOptionEqualToValue,
   filterOptions,
@@ -49,7 +69,7 @@ const Autocomplete = ({
   clearOnBlur,
   handleHomeEndKeys,
   iconSize
-}: AutocompleteProps) => {
+}: AutocompleteProps<T, Multiple, DisableClearable, FreeSolo>) => {
   return (
     <AutocompleteWrapper
       iconSize={iconSize}
@@ -115,7 +135,7 @@ const AutocompleteWrapper = styled('div')<{ iconSize?: string }>`
   .MuiAutocomplete-listbox {
     padding: 0;
     border: 1px solid ${({ theme }) => theme.custom.text.borderColor};
-    border-radius: 0.5rem;
+    border-radius: 0.75rem;
     box-shadow: none;
   }
 
diff --git a/packages/ui/src/components/library/InputField.tsx b/packages/ui/src/components/library/InputField.tsx
index ae02ac6e..1b042f2c 100644
--- a/packages/ui/src/components/library/InputField.tsx
+++ b/packages/ui/src/components/library/InputField.tsx
@@ -51,7 +51,7 @@ export const InputStyledBaseCss = css`
   padding: 0.5rem 1.25rem;
   border: none;
   outline: 1.5px solid ${theme.custom.text.borderColor};
-  border-radius: 0.5rem;
+  border-radius: 0.75rem;
   font-size: 1rem;
   font-family: 'Jost', sans-serif;
 
@@ -63,7 +63,7 @@ export const InputStyledBaseCss = css`
     cursor: not-allowed;
     background: #f3f6f9;
     outline: 1.5px solid #e7e7e7;
-    border-radius: 0.5rem;
+    border-radius: 0.75rem;
   }
 `
 
diff --git a/packages/ui/src/components/modals/Send.tsx b/packages/ui/src/components/modals/Send.tsx
index 30b1e91c..8bb4af58 100644
--- a/packages/ui/src/components/modals/Send.tsx
+++ b/packages/ui/src/components/modals/Send.tsx
@@ -274,7 +274,7 @@ const Send = ({ onClose, className, onSuccess, onFinalized }: Props) => {
       <DialogTitle>Send tx</DialogTitle>
       <DialogContent className="generalContainer">
         <Grid
-          sx={{ alignItems: 'center' }}
+          alignItems="center"
           container
         >
           <Grid
diff --git a/packages/ui/src/components/selectors/AccountSelection.tsx b/packages/ui/src/components/selectors/AccountSelection.tsx
index eeded285..3633e008 100644
--- a/packages/ui/src/components/selectors/AccountSelection.tsx
+++ b/packages/ui/src/components/selectors/AccountSelection.tsx
@@ -1,4 +1,5 @@
 import { Box, InputAdornment } from '@mui/material'
+import * as React from 'react'
 import {
   ChangeEvent,
   SyntheticEvent,
@@ -17,8 +18,10 @@ import { useAccountNames } from '../../contexts/AccountNamesContext'
 import MultixIdenticon from '../MultixIdenticon'
 import { Autocomplete, Button, InputField, TextFieldStyled } from '../library'
 import OptionMenuItem from './OptionMenuItem'
-import { AutocompleteRenderInputParams } from '@mui/material/Autocomplete/Autocomplete'
-import * as React from 'react'
+import {
+  AutocompleteRenderInputParams,
+  AutocompleteRenderOptionState
+} from '@mui/material/Autocomplete/Autocomplete'
 
 interface Props {
   className?: string
@@ -38,6 +41,9 @@ const filterOptions = createFilterOptions({
   stringify: (option: InjectedAccountWithMeta) => option.address + option.meta.name
 })
 
+const isInjectedAccountWithMeta = (value: any): value is InjectedAccountWithMeta =>
+  value && value.address && value.meta && value.meta.source
+
 const getOptionLabel = (option: string | InjectedAccountWithMeta | null) => {
   if (!option) return ''
 
@@ -77,10 +83,19 @@ const AccountSelection = ({
   }, [accountNames, selected])
 
   const onChangeAutocomplete = useCallback(
-    (_: SyntheticEvent<Element, Event>, val: string | InjectedAccountWithMeta | null) => {
+    (
+      _: SyntheticEvent<Element, Event>,
+      val: NonNullable<
+        | InjectedAccountWithMeta
+        | string
+        | undefined
+        | (string | InjectedAccountWithMeta | undefined)[]
+      >
+    ) => {
       setErrorMessage('')
       setName('')
-      const value = getOptionLabel(val)
+
+      const value = getOptionLabel(val as string)
       setSelected(value)
     },
     []
@@ -125,12 +140,8 @@ const AccountSelection = ({
 
   const renderOption = (
     props: React.HTMLAttributes<HTMLLIElement>,
-    option: {
-      address: string
-      meta: {
-        name: string
-      }
-    }
+    option: InjectedAccountWithMeta,
+    _: AutocompleteRenderOptionState
   ) => (
     <OptionMenuItem
       keyValue={option.address}
diff --git a/packages/ui/src/components/selectors/GenericAccountSelection.tsx b/packages/ui/src/components/selectors/GenericAccountSelection.tsx
index 4aff3dad..b3f8c2cd 100644
--- a/packages/ui/src/components/selectors/GenericAccountSelection.tsx
+++ b/packages/ui/src/components/selectors/GenericAccountSelection.tsx
@@ -42,6 +42,10 @@ const isOptionEqualToValue = (option: AccountBaseInfo, value: AccountBaseInfo) =
   return option.address === value.address
 }
 
+const isAccountBaseInfo = (value: any): value is AccountBaseInfo => {
+  return value && value.address
+}
+
 const GenericAccountSelection = ({
   className,
   accountList = [],
@@ -102,13 +106,18 @@ const GenericAccountSelection = ({
   }, [])
 
   const onChangeAutocomplete = useCallback(
-    (_: React.SyntheticEvent<Element, Event>, val: AccountBaseInfo | string) => {
+    (
+      _: React.SyntheticEvent<Element, Event>,
+      val: NonNullable<
+        AccountBaseInfo | string | undefined | (string | AccountBaseInfo | undefined)[]
+      >
+    ) => {
       if (typeof val === 'string') {
         onChange({
           address: val
         })
       } else {
-        onChange(val)
+        isAccountBaseInfo(val) && onChange(val)
       }
       onInputBlur()
     },
diff --git a/packages/ui/src/components/selectors/MultiProxySelection.tsx b/packages/ui/src/components/selectors/MultiProxySelection.tsx
index 5646e1e4..2722e79a 100644
--- a/packages/ui/src/components/selectors/MultiProxySelection.tsx
+++ b/packages/ui/src/components/selectors/MultiProxySelection.tsx
@@ -11,6 +11,9 @@ import { Autocomplete } from '../library'
 import { AutocompleteRenderInputParams } from '@mui/material/Autocomplete/Autocomplete'
 import TextFieldLargeStyled from '../library/TextFieldLargeStyled'
 
+const isMultiProxy = (value: any): value is MultiProxy =>
+  value && value.multisigs && value.multisigs.length > 0
+
 interface Props {
   className?: string
 }
@@ -18,7 +21,7 @@ interface Props {
 const getDisplayAddress = (option?: MultiProxy) =>
   option?.proxy ? option?.proxy : option?.multisigs[0].address
 
-const isOptionEqualToValue = (option: MultiProxy | undefined, value: MultiProxy | undefined) => {
+const isOptionEqualToValue = (option?: MultiProxy, value?: MultiProxy) => {
   if (!option || !value) return false
 
   if (!!option.proxy || !!value.proxy) {
@@ -30,7 +33,6 @@ const isOptionEqualToValue = (option: MultiProxy | undefined, value: MultiProxy
 const MultiProxySelection = ({ className }: Props) => {
   const ref = useRef<HTMLInputElement>(null)
   const { multiProxyList, selectedMultiProxy, selectMultiProxy } = useMultiProxy()
-
   const isSelectedProxy = useMemo(() => !!selectedMultiProxy?.proxy, [selectedMultiProxy])
   // We only support one multisigs if they have no proxy
   const addressToShow = useMemo(
@@ -47,31 +49,42 @@ const MultiProxySelection = ({ className }: Props) => {
   })
 
   const getOptionLabel = useCallback(
-    (option: typeof selectedMultiProxy) => {
+    (option?: NonNullable<MultiProxy | string>): string => {
       // We only support one multisigs if they have no proxy
-      const addressToSearch = option?.proxy || option?.multisigs[0].address
-      const name = !!addressToSearch && accountNames[addressToSearch]
-      return name || (addressToSearch as string)
+
+      if (isMultiProxy(option)) {
+        const addressToSearch = option?.proxy || option?.multisigs[0].address
+        const name = !!addressToSearch && accountNames[addressToSearch]
+        return name || (addressToSearch as string)
+      }
+
+      return ''
     },
     [accountNames]
   )
 
   const onChange = useCallback(
-    (_: React.SyntheticEvent<Element, Event>, val: typeof selectedMultiProxy) => {
-      if (!val) return
+    (
+      _: React.SyntheticEvent<Element, Event>,
+      value: NonNullable<MultiProxy | string | undefined | (string | MultiProxy | undefined)[]>
+    ) => {
+      if (!value) return
 
-      selectMultiProxy(val)
+      isMultiProxy(value) && selectMultiProxy(value)
     },
     [selectMultiProxy]
   )
 
-  const handleSpecialKeys = useCallback((e: any) => {
+  const handleSpecialKeys = useCallback((e: React.KeyboardEvent) => {
     if (['Enter', 'Escape'].includes(e.key)) {
       ref?.current?.blur()
     }
   }, [])
 
-  const renderOptions = (props: React.HTMLAttributes<HTMLLIElement>, option: MultiProxy) => {
+  const renderOptions = (
+    props: React.HTMLAttributes<HTMLLIElement>,
+    option: typeof selectedMultiProxy
+  ): React.ReactNode => {
     const displayAddress = getDisplayAddress(option)
 
     return (
diff --git a/packages/ui/src/components/selectors/SignerSelection.tsx b/packages/ui/src/components/selectors/SignerSelection.tsx
index 3ea1c14d..412888bf 100644
--- a/packages/ui/src/components/selectors/SignerSelection.tsx
+++ b/packages/ui/src/components/selectors/SignerSelection.tsx
@@ -1,4 +1,5 @@
 import { InputAdornment } from '@mui/material'
+import * as React from 'react'
 import { useCallback, useEffect, useMemo } from 'react'
 import { styled } from '@mui/material/styles'
 import { createFilterOptions } from '@mui/material/Autocomplete'
@@ -8,19 +9,22 @@ import AccountDisplay from '../AccountDisplay'
 import MultixIdenticon from '../MultixIdenticon'
 import { Autocomplete, TextFieldStyled } from '../library'
 import OptionMenuItem from './OptionMenuItem'
-import * as React from 'react'
 import { AutocompleteRenderInputParams } from '@mui/material/Autocomplete/Autocomplete'
 
+const isInjectedAccountWithMeta = (value: any): value is InjectedAccountWithMeta => {
+  return value && value.address && value.meta && value.meta.name
+}
+
 interface Props {
   className?: string
   possibleSigners: string[]
   onChange?: () => void
 }
 
-const getOptionLabel = (option: InjectedAccountWithMeta | undefined) => {
-  if (!option) return ''
+const getOptionLabel = (option?: NonNullable<InjectedAccountWithMeta | string>): string => {
+  if (!option || !isInjectedAccountWithMeta(option)) return ''
 
-  return option.meta.name || ''
+  return option.meta.name as string
 }
 
 const isOptionEqualToValue = (
@@ -54,8 +58,16 @@ const SignerSelection = ({ className, possibleSigners, onChange }: Props) => {
   })
 
   const onChangeSigner = useCallback(
-    (_: any, newSelected: (typeof signersList)[0]) => {
-      newSelected && selectAccount(newSelected)
+    (
+      _: React.SyntheticEvent<Element, Event>,
+      newSelected: NonNullable<
+        | (typeof signersList)[0]
+        | string
+        | undefined
+        | (string | (typeof signersList)[0] | undefined)[]
+      >
+    ) => {
+      isInjectedAccountWithMeta(newSelected) && selectAccount(newSelected)
       onChange && onChange()
     },
     [onChange, selectAccount]
@@ -63,15 +75,19 @@ const SignerSelection = ({ className, possibleSigners, onChange }: Props) => {
 
   const renderOption = (
     props: React.HTMLAttributes<HTMLLIElement>,
-    option: InjectedAccountWithMeta
-  ) => (
-    <OptionMenuItem
-      {...props}
-      keyValue={option?.address}
-    >
-      <AccountDisplay address={option?.address || ''} />
-    </OptionMenuItem>
-  )
+    option?: InjectedAccountWithMeta
+  ) => {
+    if (!option) return null
+
+    return (
+      <OptionMenuItem
+        {...props}
+        keyValue={option.address}
+      >
+        <AccountDisplay address={option?.address || ''} />
+      </OptionMenuItem>
+    )
+  }
 
   const renderInput = (params: AutocompleteRenderInputParams) => (
     <TextFieldStyled