Anyway I decided to deposit back 57$ so the account can be on positive balance, once I found another match that have x2 half of 40 minutes I will bet on over 4.5 on first half to check out if I lose, if is losed or the bet stake gonna be refunded (if gonna be losed it means is a scam strategy), I will keep the topic updated once I bet on a similar match.
You haven't been scammed by them. You can only address it as scam if they don't void the losing bet for the same reason. Don't forget to give an update here when you do that. Roobet has different rules for such events, and they reserve the right to void it. The action has been taken according to Roobet sports betting policy. Still, the odds provider shouldn't list such events if the formation was planned like that when the game was scheduled.