Dear Elton and all the visitors,
We are glad to announce some more additional details related to the issue.
The investigation has really been performed, we contacted the game provider and received a response saying that the reason why the customer was unable to undo/double his bets was Evolution Gaming system malfunction (please, keep in mind - NOT the platform behaviour on Bitcoincasino.io). Which is why the provider agreed to compensate for the malfunctioning rounds only, and the amount was like the player mentioned previously.
The game was also tested on our side, and it was found out that the behaviour of the 'undo' button was not as expected.

https://yadi.sk/d/JNLYAk6j53soww

We are sorry to say that only the rounds which were malfunctioning were eventually compensated for, all the other rounds weren't faulty.