I advise you not to participate in arbitrage betting practices. this is a guarantee for problems with bookmakers. they can close your account and not cash out your winnings. if you want money without taking risks, you should go to work and not gamble
Some problem occurs with this one before in my place where one of the winners are the enemy of the one who’s running this local sports book, they didn’t give the winning prize, so I also suggest not to participate on this one because its more risky and its better to participate on online gambling site where you can play anonymously.
Would you mind explaining more what happened? I really can't paint the picture based on your comment because in the first place, arbitrage betting is not illegal and you don't tell a gambling site that you are doing an arbitrage betting and in fact when you do an arbitrage betting, it should be from one site then the other site for your other bet.