5/5 rating? Lol, seems you get paid nicely from them.
They are a scam operation at this point, they don't payout if you happen to win. Lots of complaints around.
Literally hundreds of GOSU users who have not had any issues withdrawing all kinds of amounts - provide proof please.

From the last night! I saw it in my wallet in less than a minute, literally...

It seems to me that most people complain about sports betting, and I can't relate to that part. I am not a regular sports bettor, I don't bet with huge amounts, and my winnings are usually spent on playing slots. So no arbitrage/matching/or any tricks in my bets and parlays... when we have some interesting football games around I will probably make some bets and that's it. I think that fair players don't have problems, and even if something happens it will be solved...