diff --git a/packages/p2p/src/components/advertiser-page/advertiser-page.jsx b/packages/p2p/src/components/advertiser-page/advertiser-page.jsx
index aed006b4cfcb..58db3402033d 100644
--- a/packages/p2p/src/components/advertiser-page/advertiser-page.jsx
+++ b/packages/p2p/src/components/advertiser-page/advertiser-page.jsx
@@ -5,6 +5,7 @@ import { reaction } from 'mobx';
 import { observer } from 'mobx-react-lite';
 import { useStores } from 'Stores';
 import { Localize, localize } from 'Components/i18next';
+import { api_error_codes } from 'Constants/api-error-codes';
 import { buy_sell } from 'Constants/buy-sell';
 import { my_profile_tabs } from 'Constants/my-profile-tabs';
 import RateChangeModal from 'Components/buy-sell/rate-change-modal.jsx';
@@ -90,8 +91,20 @@ const AdvertiserPage = () => {
         >
             <RateChangeModal onMount={advertiser_page_store.setShowAdPopup} />
             <ErrorModal
-                error_message={general_store.block_unblock_user_error}
-                error_modal_title='Unable to block advertiser'
+                error_message={
+                    general_store.error_code === api_error_codes.INVALID_ADVERTISER_ID
+                        ? localize("Blocking wasn't possible as {{name}} is not using Deriv P2P anymore.", {
+                              name: advertiser_page_store.advertiser_details_name,
+                          })
+                        : general_store.block_unblock_user_error
+                }
+                error_modal_title={
+                    general_store.error_code === api_error_codes.INVALID_ADVERTISER_ID
+                        ? localize('{{name}} is no longer on Deriv P2P', {
+                              name: advertiser_page_store.advertiser_details_name,
+                          })
+                        : localize('Unable to block advertiser')
+                }
                 has_close_icon={false}
                 is_error_modal_open={is_error_modal_open}
                 setIsErrorModalOpen={is_open => {
diff --git a/packages/p2p/src/components/my-profile/block-user/block-user.jsx b/packages/p2p/src/components/my-profile/block-user/block-user.jsx
index 62a04e6046ca..759694fd353d 100644
--- a/packages/p2p/src/components/my-profile/block-user/block-user.jsx
+++ b/packages/p2p/src/components/my-profile/block-user/block-user.jsx
@@ -3,6 +3,7 @@ import { observer } from 'mobx-react-lite';
 import { useStores } from 'Stores';
 import { DesktopWrapper, MobileFullPageModal, MobileWrapper } from '@deriv/components';
 import { isMobile } from '@deriv/shared';
+import { api_error_codes } from 'Constants/api-error-codes';
 import { my_profile_tabs } from 'Constants/my-profile-tabs';
 import { localize } from 'Components/i18next';
 import BlockUserModal from 'Components/block-user/block-user-modal';
@@ -24,8 +25,20 @@ const BlockUser = () => {
                 onSubmit={my_profile_store.onSubmit}
             />
             <ErrorModal
-                error_message={general_store.block_unblock_user_error}
-                error_modal_title='Unable to block advertiser'
+                error_message={
+                    general_store.error_code === api_error_codes.INVALID_ADVERTISER_ID
+                        ? localize("Blocking wasn't possible as {{name}} is not using Deriv P2P anymore.", {
+                              name: my_profile_store.selected_trade_partner.name,
+                          })
+                        : general_store.block_unblock_user_error
+                }
+                error_modal_title={
+                    general_store.error_code === api_error_codes.INVALID_ADVERTISER_ID
+                        ? localize('{{name}} is no longer on Deriv P2P', {
+                              name: my_profile_store.selected_trade_partner.name,
+                          })
+                        : localize('Unable to block advertiser')
+                }
                 has_close_icon={false}
                 is_error_modal_open={general_store.block_unblock_user_error && !general_store.is_barred}
                 setIsErrorModalOpen={() => general_store.setBlockUnblockUserError('')}
diff --git a/packages/p2p/src/constants/api-error-codes.js b/packages/p2p/src/constants/api-error-codes.js
index 1ce48e565c79..059dcb84b654 100644
--- a/packages/p2p/src/constants/api-error-codes.js
+++ b/packages/p2p/src/constants/api-error-codes.js
@@ -4,6 +4,7 @@ export const api_error_codes = Object.freeze({
     DUPLICATE_ADVERT: 'DuplicateAdvert',
     EXCESSIVE_VERIFICATION_FAILURES: 'ExcessiveVerificationFailures',
     EXCESSIVE_VERIFICATION_REQUESTS: 'ExcessiveVerificationRequests',
+    INVALID_ADVERTISER_ID: 'InvalidAdvertiserID',
     INVALID_VERIFICATION_TOKEN: 'InvalidVerificationToken',
     ORDER_EMAIL_VERIFICATION_REQUIRED: 'OrderEmailVerificationRequired',
     ORDER_CREATE_FAIL_CLIENT_BALANCE: 'OrderCreateFailClientBalance',
diff --git a/packages/p2p/src/stores/advertiser-page-store.js b/packages/p2p/src/stores/advertiser-page-store.js
index d0494e15b80b..38f7a307356d 100644
--- a/packages/p2p/src/stores/advertiser-page-store.js
+++ b/packages/p2p/src/stores/advertiser-page-store.js
@@ -7,9 +7,9 @@ export default class AdvertiserPageStore extends BaseStore {
     active_index = 0;
     ad = null;
     adverts = [];
+    api_error_message = '';
     counterparty_advertiser_info = {};
     counterparty_type = buy_sell.BUY;
-    api_error_message = '';
     form_error_message = '';
     has_more_adverts_to_load = false;
     is_counterparty_advertiser_blocked = false;
@@ -27,14 +27,14 @@ export default class AdvertiserPageStore extends BaseStore {
             active_index: observable,
             ad: observable,
             adverts: observable,
-            counterparty_type: observable,
             api_error_message: observable,
+            counterparty_type: observable,
             form_error_message: observable,
             has_more_adverts_to_load: observable,
             is_counterparty_advertiser_blocked: observable,
             is_dropdown_menu_visible: observable,
-            is_loading: observable,
             is_loading_adverts: observable,
+            is_loading: observable,
             is_submit_disabled: observable,
             show_ad_popup: observable,
             submitForm: observable,
diff --git a/packages/p2p/src/stores/general-store.js b/packages/p2p/src/stores/general-store.js
index 2794fb8e7c6c..59a6d46cc39f 100644
--- a/packages/p2p/src/stores/general-store.js
+++ b/packages/p2p/src/stores/general-store.js
@@ -22,6 +22,7 @@ export default class GeneralStore extends BaseStore {
     balance;
     cancels_remaining = null;
     contact_info = '';
+    error_code = '';
     feature_level = null;
     inactive_notification_count = 0;
     is_advertiser = false;
@@ -73,6 +74,7 @@ export default class GeneralStore extends BaseStore {
             advertiser_relations_response: observable, //TODO: Remove this when backend has fixed is_blocked flag issue
             block_unblock_user_error: observable,
             balance: observable,
+            error_code: observable,
             feature_level: observable,
             inactive_notification_count: observable,
             is_advertiser: observable,
@@ -127,6 +129,7 @@ export default class GeneralStore extends BaseStore {
             setAdvertiserSellLimit: action.bound,
             setAppProps: action.bound,
             setAdvertiserRelationsResponse: action.bound, //TODO: Remove this when backend has fixed is_blocked flag issue
+            setErrorCode: action.bound,
             setFeatureLevel: action.bound,
             setInactiveNotificationCount: action.bound,
             setIsAdvertiser: action.bound,
@@ -214,6 +217,7 @@ export default class GeneralStore extends BaseStore {
                         );
                     }
                 } else {
+                    this.setErrorCode(response.error.code);
                     this.setBlockUnblockUserError(response.error.message);
                 }
             }
@@ -609,6 +613,10 @@ export default class GeneralStore extends BaseStore {
         this.default_advert_description = default_advert_description;
     }
 
+    setErrorCode(error_code) {
+        this.error_code = error_code;
+    }
+
     setFeatureLevel(feature_level) {
         this.feature_level = feature_level;
     }