As I can post in the forums, my account has been activated.
After some digging this might be the issue?
"Chat will be disabled until you've played 10 games. This is to prevent people who will create accounts simply to post ad links or harass others. We want to make sure you're here to play chess! After you've played 10 games of any kind, chat will be unlocked."
(Ad links --> any sort of link, pictures, ... ?)
Also: "You are currently unable to comment with this account." <- Watching chess.com stream through the website/browser
No idea, I will let it rest for a week and get back to you through this post