As @Oshondy already mentioned. Your case is about violating the casino ToS. Probably the casino has a record of your IP and matched to a previously ban account. Or the account that tip you that amount have a problem on Rollbit that’s why your new account is immediately connected on it.
Do you use VPN while playing because there’s a chance that you use an IP share by someone who was ban on the Rollbit casino before. This kind of case is very hard to defend especially if Rollbit have a proof for account connection.
so the account that tipped me is someone that diamond there and he still cashout and dont have any prob so its not a problem like that. the user that tipped me is someone who tip a lot of people in chat..
and about the ip idk i dont think its the same ip but maybe i did login ones from my parents home idk i dont remmber ..
and no i dont use vpn as i can recall .
and if one of my famliy member is banned so it means now i am banned to? they can do that?