Cannot access community.adobe.com when logged in with my Adobe account

Hi.

(I’m posting this from a free account using a different email address, because my Adobe account can’t access the site.)

When I'm logged into my paid Adobe.com account, every page on community.adobe.com returns an error message. I am completely locked out. The site displays the message “You are not allowed to access this site,” then usually, not always, immediately redirects to another URL (https://community.adobe.com/t5/errors/FilterErrorHandlerPage),  displaying the message “An Unexpected Error has occured.” 

Even though I’m signed in, the error pages have a “Sign In” button at the top-right, but clicking it returns a 403 error from the server.

This happens on every browser I’ve tried: Mac Safari, Firefox, and Chrome, and on iPhone Safari. I spent about 2-1/2 hours with Adobe support, and all we accomplished is getting me logged into a new free account to access this site.

Am I banned? Is there something wrong with my account? 

Thanks.

Screenshots:

First error page:

Second error page:

Server error 403: