After running his account up with sports betting he tried to withdrawal 3.5 SOL with $1100 left in his account. After hit withdrawal his account was under review and eventually his withdrawal went through along his account was blocked.
do you know how much his deposit was?
according to their terms he should get a refund of the initial deposit.

The thing is how is betting on winners is arbitrage betting? I know what arbitrage in trading is but I had to look this up on this one. It’s similar I found out. But how can someone been accused for arbitrage betting when you only betting who is going to win?
casinos really do not like people who do arbitrage since that eats into their profits, and it's almost against the terms on all of them.
My friend is betting live during the tennis match.
does your friend have access to his betting history?
if he was not doing arbitrage that should easily prove that
but i guess he no longer has access to that since his account was blocked.
Please let a representative come in and bring proof. His username is Iqojahuwum291
i doubt they are gonna share any proof here since you are not involved in this. your friend is.
better ask your friend to submit a complaint on askgamblers:
https://www.askgamblers.com/online-casinos/reviews/duckdice-casinoso how can a casino detect arbitrage betting.
most people bet in round numbers like a $10, $50, $200 bets etc...
but if you are actually doing arbitrage with a calculator to maximize your profit, your bets would look like something like $22.5, $134.7, etc... which is a dead giveaway.
even if you round your bets to have no decimal points, it's still easy to detect since normal players don't bet like that.