Banned for ip problem

Hello i was try register a account here and i got this error:
Unfortunately your IP address already appears in our database. Either you or someone else using this IP address has previously registered on Sythe.org. You are only entitled to a single Sythe account, and if you are banned you must instead appeal your ban or request a pardon. If you believe this to be in error please open a dispute here.

Users associated with your IP address: g4ugameforyou
about my ip i was at Airbnb in [removed] my laptop connectd to this airbnb wifi and i cannot register
im not associated with [removed]