diff --git a/assets/js/src/settings/premium_tab/messages/mss_messages.jsx b/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
index 654d90d474..308e1d2c8e 100644
--- a/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
+++ b/assets/js/src/settings/premium_tab/messages/mss_messages.jsx
@@ -3,7 +3,7 @@ import React from 'react';
 import MailPoet from 'mailpoet';
 
 const validMessage = (
-  <div className="mailpoet_success">
+  <div className="mailpoet_success mailpoet_mss_key_valid">
     {MailPoet.I18n.t('premiumTabMssValidMessage')}
   </div>
 );
diff --git a/assets/js/src/settings/premium_tab/premium_tab.jsx b/assets/js/src/settings/premium_tab/premium_tab.jsx
index 2b9282e83d..936f2d0973 100644
--- a/assets/js/src/settings/premium_tab/premium_tab.jsx
+++ b/assets/js/src/settings/premium_tab/premium_tab.jsx
@@ -125,13 +125,15 @@ const PremiumTab = (props) => {
     }
   };
 
-  async function verifyMailPoetSendingServiceKey() {
+  async function verifyMailPoetSendingServiceKey(activateMssIfKeyValid) {
     try {
       const response = await requestServicesApi(key, 'checkMSSKey');
       setMssKeyValid(true);
       setMssKeyMessage(response.data.message || null);
 
-      await activateMss(key);
+      if (activateMssIfKeyValid) {
+        await activateMss(key);
+      }
     } catch (error) {
       setMssKeyValid(false);
       setMssKeyMessage(error.errors.map((e) => e.message).join(' ') || null);
@@ -171,7 +173,7 @@ const PremiumTab = (props) => {
                 type="button"
                 id="mailpoet_premium_key_verify"
                 className="button-secondary"
-                onClick={async () => {
+                onClick={async (event) => {
                   if (!key) {
                     MailPoet.Notice.error(
                       MailPoet.I18n.t('premiumTabNoKeyNotice'),
@@ -185,7 +187,8 @@ const PremiumTab = (props) => {
                   setMssKeyValid(null);
 
                   MailPoet.Modal.loading(true);
-                  await verifyMailPoetSendingServiceKey();
+                  const isUserTriggered = event.isTrusted;
+                  await verifyMailPoetSendingServiceKey(isUserTriggered);
                   await verifyMailPoetPremiumKey();
                   MailPoet.Modal.loading(false);
                 }}
diff --git a/views/settings/mta.html b/views/settings/mta.html
index 1a26b804e6..0bc19e243e 100644
--- a/views/settings/mta.html
+++ b/views/settings/mta.html
@@ -1131,7 +1131,7 @@
   function updateMSSActivationUI() {
     var $ = jQuery;
     var group = $('.mailpoet_sending_methods .mailpoet_active').data('group');
-    var key_valid = !$('.mailpoet_mss_key_valid').hasClass('mailpoet_hidden');
+    var key_valid = !!$('.mailpoet_mss_key_valid');
 
     if (group !== 'mailpoet') {
       $('.mailpoet_actions .mailpoet_invalid_key').toggleClass('mailpoet_hidden', key_valid);