If your game does freeze, don't worry, you'll be able to pick up from where you left off the next time you open the game. The round would have completed on the server even if your device has frozen or you've lost your connection. Any winnings will be paid into your account as normal.
Though, if you think something isn't quite right once the game reloads, please try clearing your cache and cookies and logging back in - sometimes a little reset is all it'll need!
Do get in touch with our Support Team if you think something still isn't quite right and they will be happy to investigate this further for you.