[sentrms]

I think it helps if your Hetzner account is at least a couple of months old, with usage. Quite often these things happen to new accounts. Lock your server down and monitor resource and bandwidth usage. You don't want to be banned because someone else is abusing your server. I'm on Hetzner too but will consider moving my hot spare out of Hetzner to a different provider.

[ev1]

This might be part of the reason, if OP's account was actually compromised, they signed up this month and got their first abuse report less than half a month after, the type of customer hetzner does not want in general...