Yes, I used vpn. But now in Russia all foreign bookmakers are blocked. While I was making deposits, there were no problems. While I was losing everything was fine. But as soon as I won a little and asked for a payout, my account was blocked.
This is where the main problem is came from, they're not allow their users to play using VPN and of course any licensed casinos right now are ban Russian citizens. I don't know really sure if Playbetr was ban Russian since 2018, maybe it was a mistake by them.
The fault is on your side since you're careless to not read the terms of service and suddenly deposit to their casino, remember any site usually updated their terms of services every year especially when Russia get sanctioned.