If this situation occurred in August 2023 why did you not make this scam accusation for your friend (if he was unable to do it himself) last year? When you stated they replied via email several times, you did not show screenshots of the content therefore we do not know why they suspended the account and you have not explained what the reason was.

I am speculating but Duelbits suspending the account could be down to having multiple accounts attached to a single IP address or use of VPN or use of service from a restricted area or even exploiting a flaw in a game. What was the actual reason they gave?