Support don't answer clearly the reason of restriction of the account.
For each account I use individual proxy adress. And as I told you I'm buying Bet365 accounts from the different sellers
Just a question, why you buy multiple Bet365 accounts when you can bet using a single account ?
Does Bet365 allow multiple accounts, if not then they may have detected your multiple accounts. Also using different VPN address is not a perfect solution as your browser may still be leaking the data.
It's a risky thing when you use multiple accounts with just changing your VPN address. I guarantee you to not use that. Double check your safety, try to use much safer vpn address or IP address for you not to worry about your accounts.
You're taking a risk that is very harmful for you. Be careful when you do that.