My account is active, but I am unable to post or reply to anything other than Bug Report and PTR forums.
Having this same issue. I can only post and reply in a few of the forums.
It seems like the forums won’t acknowledge that your account has been activated unless you log out of the forums and then log back in. After doing this I was able to post and reply in all categories of forums instead of just Bug Report and PTR.
Testing if I can post or not.