Anyone care to comment on the OP's actual problem?
To put it simple way, OP has won from a parlay with 8.44odds and profited 1.6k EUR, but after he tried to withdraw his money, it was canceled by system and then with all these money, it suddenly placed to a random bet which resulted lose. So it's just a like OP lose all his money from a single bet.
If we see this kind of bets, everybody knows what kind of better you are.
Thinking to pick up some easy money because some matches are fixed.
When does that ever end with these guys exploiting the apis from a bookmaker?
Won from 8.44odds, where is the wrong part with that? Even my friend has ever won from 1k odds on parlay.