So Twitter suspended my account without providing any reasoning. It is probably related to using Tor Browser but that used to work for years without major issues.
I asked them to unlock the account, lets see how this goes.
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Their reply to my appeal:
"Hello,
We’re writing to let you know that your account has been suspended due to multiple or repeat violations of our rules.
Please do not reply to this email, or send us new appeals for this account as we won’t monitor them.
Thanks,
Twitter"
Server run by the main developers of the project 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!
@nusenu if you're in the EU you could try to get the "reason" via a GDPR request. Would be interesting to know if tor is a factor.