They are able to add the card to their log in eventually but the Membership Rewards accounts are still not linked and the new card shows a 0 Membership Rewards balance. They call in and the tech support has no clue what to do. People signing up for Business Gold and Platinum cards in the last day or two are having this same issue still. This issue has been percolating for 2 – 3 weeks now and American Express still seems completely clueless as to what is going on. Learn more about this card and its features!.American Express Card Activation Issues: Final Thoughts.Issues Activating Our New Amex Business Platinum Cards.Call & Ask For The Membership Rewards Department.Update 11/30/22: How To Fix Your Account.