This is a gambling syndicate that typically involves on match fixing. You did the right choice for not selling your account because your KYC will be mark by the odds provider which means even your account on other casino will be flagged as being involved on malicious activity.
Yes that's the reason why I refused, if my account is not KYC maybe I will sell it and I can create a new account

I'm not a hypocrite who doesn't need money
You know for one withdrawal my friend will get 10-15% commission and he said most of it happened in Esports and tennis matches, he also said the info was not 100% accurate it means out of 10 info only works on 7-8 matches. Another problem is that the account is blocked or the withdrawal is pending so it's not completely tempting I mean the chance for a safe point is only 50%
I’m curious what will be the setup on this deal. You will give them your KYC account then they are the one who will deposit and bet for themselves?
Are they not worried that you can recover your account easily after they deposit since you KYC on it?
I knew someone in the past that offering this same shady modus, But on his case I’m the one who will bet on my own using my money while his balance will be sent on escrow. The only problem is when the pick is marked as fixed match while my money will be confiscated.
To cut it short, this kind of hassle bet shouldn’t be entertained at all time.