First of all check if under the “MY BETS” tab you can see the result of the game. It could be that the issue was only on the front-end while the back-end correctly processed your game. You should see the result in this tab and by clicking on the link you can verify the results on the blockchain. If the results are visible there will not be a refund as the game has been completed correctly and provably fair on the blockchain.
If you see no result or you see that the result is a win, but did not receive the payout please contact our support through our LiveChat on our website at the bottom left.