Step 1: After choosing an affiliate account but the link notification system fails because Gmail is using without an admin role to the Google Ads account. This means that the Gmail account you are using has only a Standard role (Read Only / Standard Permissions) with the Google Ads account you want to link. Step 2: With the above problem, you need to do:
Relink the correct Gmail account that is administering the Google Ads account you want to link, to perform admin permissions for this account again.
