Cannot write ticket, unknown ban

Hello,

I've tried writing an appeal/ticket for the ban I found waiting for me today, yet there's no any options for me to select under "SELECT BAN TO APPEAL". Because of that, I cannot send the ticket.

Having no other option, I'll write my appeal here:

There's no info on MyAccount page about my ban, as if it doesn't exist.

I've read that getting a new router can get me an automated ban, and I happen to have gotten a new router this morning. If this is the case, how can I remedy that ?

Thanks in advance.