@33c74427f3b2b73d5e38f3e6c991c122a55d204072356f71da49a0e209fb6940 Tutanota blocks VPNs and Tor, and doesn't support GPG or mail clients. It's also a honeypot that should be avoided.
I recently made a post where I recommended some alternatives.
@33c74427f3b2b73d5e38f3e6c991c122a55d204072356f71da49a0e209fb6940 From what I've heard it's one email address per IP, so chances are, nobody signed up using your IP prior.