If OP didn't have stable internet connection this could happen. I had same problems several times with same auto stop button, and not just with that. When I spin the slot and it won't stop spinig and just report connection problem, once I was lost money on poker tournament, connection disappeared in one moment and when come back after hour and half tournament was finished.
Nobody refunded me, so I doubt you will have luck with this. I wish you luck, but be prepared to not get your money back, you will be less nervous about it.
My connection was fine and stable I am not mad saying this thing again and again >.<