I tried to spin up an image (my first time using it). The error I got seemed to suggest that it was still available to users that had already accepted the terms, but no new users could use it. I mentioned it to @drobbins on discord and he had gotten the same mail you got. He indicated he was trying to track it down and sort it out with AWS.
https://bugs.funtoo.org/browse/FL-7846 is the bug number.