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"
@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.