Does anybody know how to reach out to the team? I need their help to recover my BTT account, but they don't answer on slack. Any idea?
Why do you need Mysterium team to recover your old Bitcointalk account? it's better if you post your issue on the "meta" section:
https://bitcointalk.org/index.php?board=24.0Right, the Mysterium team can't possibly help you with your Bitcointalk account. You probably need to write to one of the Bitcointalk moderators / admins and ask them to solve the problem. Mysterium team is not affiliated with Bitcointalk and they don't have the rights / access to do anything with your account here.