Peacock Premium Plus upgrade activation failure

I had my free, included Peacock Premium activated on Peacock.

I upgraded the Peacock Premium to Premium Plus (ad-free). At first the YourSubscription page offered a link to Activate Premium Plus, however it displayed a pop-up error to "Try Again"  when clicked.

I tried troubleshooting with multiple Peacock and Xfinity support chat assistants with no success.

I cancelled my Premium Plus, and then returned to purchase the upgrade again. 

The YourSubscription page now shows Premium Plus as Activated, and offers a link to Unlink Account, but that returns the same pop-up error to try again.