diff --git a/src/bot/listeners.ts b/src/bot/listeners.ts
index 22e2c4e..1f733e2 100644
--- a/src/bot/listeners.ts
+++ b/src/bot/listeners.ts
@@ -11,7 +11,7 @@ export class UpdateListeners {
 
     @On("sticker")
     async onSticker(@Ctx() ctx: Context) {
-        await ctx.reply("👍");
+        // await ctx.reply("👍");
     }
 
     @Hears("hi")
diff --git a/src/db/schemas/session.schema.ts b/src/db/schemas/session.schema.ts
index 54d7a5e..9f89495 100644
--- a/src/db/schemas/session.schema.ts
+++ b/src/db/schemas/session.schema.ts
@@ -1,7 +1,7 @@
 import { Prop, Schema, SchemaFactory } from "@nestjs/mongoose";
 import { HydratedDocument } from "mongoose";
 
-@Schema({ expires: "7d" })
+@Schema({ timestamps: true }) // Enables `createdAt` and `updatedAt` fields automatically
 export class Session {
     @Prop({ required: true })
     type: string;
@@ -11,6 +11,10 @@ export class Session {
 
     @Prop({ required: true })
     option: string;
+
+    @Prop({ default: Date.now, expires: "7d" }) // TTL index with expiration after 7 days
+    createdAt: Date; // MongoDB uses this field for the TTL
 }
+
 export type TSession = HydratedDocument<Session>;
 export const SessionSchema = SchemaFactory.createForClass(Session);
diff --git a/src/db/task.service.ts b/src/db/task.service.ts
index 1e1fa84..b8c8d07 100644
--- a/src/db/task.service.ts
+++ b/src/db/task.service.ts
@@ -182,7 +182,7 @@ export class TaskService implements ITask {
 
     async deleteAllTasksForJob(jobId: string): Promise<void> {
         await this.taskModel.deleteMany({
-            _id: jobId,
+            _id: jobId, // BUG - there should be jobId in the task scheme
             status: {
                 $in: [taskStatus.new, taskStatus.snoozed, taskStatus.pending],
             },
diff --git a/src/notebook.txt b/src/notebook.txt
new file mode 100644
index 0000000..de0da2c
--- /dev/null
+++ b/src/notebook.txt
@@ -0,0 +1,154 @@
+{
+  "update_id": 396065464,
+  "my_chat_member": {
+    "chat": {
+      "id": -892251879,
+      "title": "Дикари",
+      "type": "group",
+      "all_members_are_administrators": true
+    },
+    "from": {
+      "id": 268482275,
+      "is_bot": false,
+      "first_name": "uncle Lyozha",
+      "username": "Lyozha",
+      "language_code": "en"
+    },
+    "date": 1719910633,
+    "old_chat_member": {
+      "user": {
+        "id": 7035486003,
+        "is_bot": true,
+        "first_name": "test_lyozha_bot",
+        "username": "testLyozhaBot"
+      },
+      "status": "left"
+    },
+    "new_chat_member": {
+      "user": {
+        "id": 7035486003,
+        "is_bot": true,
+        "first_name": "test_lyozha_bot",
+        "username": "testLyozhaBot"
+      },
+      "status": "member"
+    }
+  }
+},
+{
+  "update_id": 396065465,
+  "message": {
+    "message_id": 2487,
+    "from": {
+      "id": 268482275,
+      "is_bot": false,
+      "first_name": "uncle Lyozha",
+      "username": "Lyozha",
+      "language_code": "en"
+    },
+    "chat": {
+      "id": -892251879,
+      "title": "Дикари",
+      "type": "group",
+      "all_members_are_administrators": true
+    },
+    "date": 1719910633,
+    "new_chat_participant": {
+      "id": 7035486003,
+      "is_bot": true,
+      "first_name": "test_lyozha_bot",
+      "username": "testLyozhaBot"
+    },
+    "new_chat_member": {
+      "id": 7035486003,
+      "is_bot": true,
+      "first_name": "test_lyozha_bot",
+      "username": "testLyozhaBot"
+    },
+    "new_chat_members": [
+      {
+        "id": 7035486003,
+        "is_bot": true,
+        "first_name": "test_lyozha_bot",
+        "username": "testLyozhaBot"
+      }
+    ]
+  }
+}
+User with 7035486003 not found in DB.
+New user created:
+ {
+  userName: 'testLyozhaBot',
+  tgId: 7035486003,
+  _id: new ObjectId('6683c0e9362e888122b1eb59'),
+  __v: 0
+}
+{
+  "update_id": 396065466,
+  "my_chat_member": {
+    "chat": {
+      "id": -892251879,
+      "title": "Дикари",
+      "type": "group",
+      "all_members_are_administrators": true
+    },
+    "from": {
+      "id": 268482275,
+      "is_bot": false,
+      "first_name": "uncle Lyozha",
+      "username": "Lyozha",
+      "language_code": "en"
+    },
+    "date": 1719910650,
+    "old_chat_member": {
+      "user": {
+        "id": 7035486003,
+        "is_bot": true,
+        "first_name": "test_lyozha_bot",
+        "username": "testLyozhaBot"
+      },
+      "status": "member"
+    },
+    "new_chat_member": {
+      "user": {
+        "id": 7035486003,
+        "is_bot": true,
+        "first_name": "test_lyozha_bot",
+        "username": "testLyozhaBot"
+      },
+      "status": "left"
+    }
+  }
+}
+{
+  "update_id": 396065467,
+  "message": {
+    "message_id": 2489,
+    "from": {
+      "id": 268482275,
+      "is_bot": false,
+      "first_name": "uncle Lyozha",
+      "username": "Lyozha",
+      "language_code": "en"
+    },
+    "chat": {
+      "id": -892251879,
+      "title": "Дикари",
+      "type": "group",
+      "all_members_are_administrators": true
+    },
+    "date": 1719910650,
+    "left_chat_participant": {
+      "id": 7035486003,
+      "is_bot": true,
+      "first_name": "test_lyozha_bot",
+      "username": "testLyozhaBot"
+    },
+    "left_chat_member": {
+      "id": 7035486003,
+      "is_bot": true,
+      "first_name": "test_lyozha_bot",
+      "username": "testLyozhaBot"
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/scenes/assignUser.wizard.ts b/src/scenes/assignUser.wizard.ts
index b64f55f..e97a4f2 100644
--- a/src/scenes/assignUser.wizard.ts
+++ b/src/scenes/assignUser.wizard.ts
@@ -51,7 +51,7 @@ export class AssignUserWizard {
             await ctx.editMessageText(errMsgGeneral);
         }
         const pmMsg =
-            "New task created: \n" + newTask.jobName + " = " + newTask.userName;
+            "The user on duty has been changed: \n" + newTask.jobName + " = " + newTask.userName;
         await ctx.editMessageText(pmMsg);
         await ctx.scene.leave();
     }