diff --git a/config.xml b/config.xml
index 21afd505d..1d5b90ab8 100644
--- a/config.xml
+++ b/config.xml
@@ -2,7 +2,7 @@
 <module>
 	<name>ps_checkout</name>
 	<displayName><![CDATA[PrestaShop Checkout]]></displayName>
-	<version><![CDATA[6.3.5.2]]></version>
+	<version><![CDATA[6.3.5.3]]></version>
 	<description><![CDATA[Provide the most commonly used payment methods to your customers in this all-in-one module, and manage all your sales in a centralized interface.]]></description>
 	<author><![CDATA[PrestaShop]]></author>
 	<tab><![CDATA[payments_gateways]]></tab>
diff --git a/controllers/front/validate.php b/controllers/front/validate.php
index be9c2ab95..1ef8999c7 100644
--- a/controllers/front/validate.php
+++ b/controllers/front/validate.php
@@ -402,6 +402,10 @@ private function handleException(Exception $exception)
                     $exceptionMessageForCustomer = $this->module->l('Transaction expired, please try again.');
                     $notifyCustomerService = false;
                     break;
+                case PayPalException::PAYMENT_SOURCE_CANNOT_BE_USED:
+                    $exceptionMessageForCustomer = $this->module->l('The selected payment method does not support this type of transaction. Please choose another payment method or contact support for assistance.');
+                    $notifyCustomerService = false;
+                    break;
             }
         }
 
diff --git a/ps_checkout.php b/ps_checkout.php
index 7a9b2dc22..25a005953 100755
--- a/ps_checkout.php
+++ b/ps_checkout.php
@@ -123,7 +123,7 @@ class Ps_checkout extends PaymentModule
 
     // Needed in order to retrieve the module version easier (in api call headers) than instanciate
     // the module each time to get the version
-    const VERSION = '6.3.5.2';
+    const VERSION = '6.3.5.3';
 
     const INTEGRATION_DATE = '2022-14-06';
 
@@ -144,7 +144,7 @@ public function __construct()
 
         // We cannot use the const VERSION because the const is not computed by addons marketplace
         // when the zip is uploaded
-        $this->version = '6.3.5.2';
+        $this->version = '6.3.5.3';
         $this->author = 'PrestaShop';
         $this->currencies = true;
         $this->currencies_mode = 'checkbox';
diff --git a/src/Builder/PayPalSdkLink/PayPalSdkLinkBuilder.php b/src/Builder/PayPalSdkLink/PayPalSdkLinkBuilder.php
index 80319694e..504c85d2b 100644
--- a/src/Builder/PayPalSdkLink/PayPalSdkLinkBuilder.php
+++ b/src/Builder/PayPalSdkLink/PayPalSdkLinkBuilder.php
@@ -51,6 +51,9 @@ class PayPalSdkLinkBuilder
     /** @var ExpressCheckoutConfiguration */
     private $expressCheckoutConfiguration;
 
+    /** @var array */
+    private static $cache = [];
+
     /**
      * @param PayPalConfiguration $configuration
      * @param PayPalPayLaterConfiguration $payLaterConfiguration
@@ -347,6 +350,57 @@ private function getLocale()
         return '';
     }
 
+    // TODO : Remove everything Sofort related after October 2024 when its no longer supported by PayPal
+    private function isSofortAvailableForMerchant()
+    {
+        if (isset(self::$cache['sofortAvailability'])) {
+            return self::$cache['sofortAvailability'];
+        }
+
+        $query = new \DbQuery();
+        $query->select('date_add');
+        $query->from('configuration');
+        $query->where('name = "PS_CHECKOUT_PAYPAL_ID_MERCHANT"');
+
+        $shopId = \Shop::getContextShopID(true);
+        if ($shopId) {
+            $query->where('id_shop IS NULL OR id_shop = ' . (int) $shopId);
+        }
+
+        $dateAdd = \Db::getInstance()->getValue($query);
+
+        if (empty($dateAdd) || strpos($dateAdd, '0000-00-00') !== false) {
+            // Sofort is unavailable for merchants who have not onboarded yet.
+            self::$cache['sofortAvailability'] = false;
+
+            return false;
+        }
+
+        $dtZone = new \DateTimeZone('UTC');
+        $now = new \DateTime('now', $dtZone);
+        $createdAt = new \DateTime($dateAdd, $dtZone);
+        $deprecationDate = new \DateTime('2024-02-01', $dtZone);
+        $unavailabilityDate = new \DateTime('2024-09-30', $dtZone);
+
+        if ($now > $unavailabilityDate) {
+            // Sofort is totally unavailable after September 30, 2024.
+            self::$cache['sofortAvailability'] = false;
+
+            return false;
+        }
+
+        if ($now > $deprecationDate && $createdAt >= $deprecationDate) {
+            // Sofort is unavailable for merchants onboarded after February 01, 2024.
+            self::$cache['sofortAvailability'] = false;
+
+            return false;
+        }
+
+        self::$cache['sofortAvailability'] = true;
+
+        return true;
+    }
+
     private function getEligibleAlternativePaymentMethods()
     {
         $fundingSourcesEnabled = [];
@@ -414,6 +468,7 @@ private function getEligibleAlternativePaymentMethods()
                 && $fundingSource['name'] === 'sofort'
                 && (($context->currency->iso_code === 'EUR' && in_array($country, ['AT', 'BE', 'DE', 'ES', 'NL'], true))
                 || ($context->currency->iso_code === 'GBP' && in_array($country, ['GB', 'UK'], true)))
+                && $this->isSofortAvailableForMerchant()
             ) {
                 $fundingSourcesEnabled[] = $fundingSource['name'];
             }
diff --git a/src/Exception/PayPalException.php b/src/Exception/PayPalException.php
index c95725238..015b0a728 100644
--- a/src/Exception/PayPalException.php
+++ b/src/Exception/PayPalException.php
@@ -153,4 +153,5 @@ class PayPalException extends PsCheckoutException
     const PAYMENT_DENIED = 128;
     const CARD_BRAND_NOT_SUPPORTED = 129;
     const RESOURCE_NOT_FOUND = 130;
+    const PAYMENT_SOURCE_CANNOT_BE_USED = 131;
 }
diff --git a/src/PayPalError.php b/src/PayPalError.php
index 8a6d2eea5..7d30d09c1 100644
--- a/src/PayPalError.php
+++ b/src/PayPalError.php
@@ -303,6 +303,8 @@ public function throwException()
                 throw new PayPalException('Processing of this card brand is not supported. Use another type of card.', PayPalException::CARD_BRAND_NOT_SUPPORTED);
             case 'RESOURCE_NOT_FOUND':
                 throw new PayPalException('The specified resource does not exist.', PayPalException::RESOURCE_NOT_FOUND);
+            case 'PAYMENT_SOURCE_CANNOT_BE_USED':
+                throw new PayPalException('The provided payment source cannot be used to pay for the order. Please try again with a different payment source by creating a new order.', PayPalException::PAYMENT_SOURCE_CANNOT_BE_USED);
             default:
                 throw new PayPalException($this->message, PayPalException::UNKNOWN);
         }