This bookie is a huge scam.
I opened an account at the beginning of 2023. In total I made three deposits via BTC within last 2 months. I successfully received 2 withdrawals via BTC. When I requested a 3rd withdrawal they closed down my account due to violation of their T&C. They confiscated my winnings (approx. 2k USD) as well as my deposits which I had not withdrawn so far. They don´t give any further reasoning for account closure, just violation of T&C.
I think you wont find any support from BTC365 team here in forum because they are inactive for some time, but you can try posting evidence with screenshots in scam accussations.
They can't ban someone and close their account without clear explanation what happened, but I didn't use BTC365 for a long time, after they changed providers and website design.
Did they tell you what part of T&C exactly you violated, was it uasge of multiple accounts or something else?