The game can sometimes get stuck trying to connect to online servers, either due to a slow or unstable internet connection. Try disabling your internet entirely and restarting the app, or trying again later once you have a more stable connection.
If you are playing across devices, make sure you are logged into the same Game Center or Google Play Games account for both.
This can happen on iOS when 'Silent mode' is turned on, turning it off should restore the game's audio.
Some devices may not have the required sensors for these minigames, so they may not function as intended. To fix this, you can change the 'Control Mode' in the options menu to 'Touch'.
Try experimenting with changing the 'Audio Buffer' in the options menu to see if it improves the audio playback.
Please use the "Restore Purchases" button in the shop menu to restore your purchases.
If you have any other issues or bugs to report, you can join the Discord server and make a post in #bugs-feedback, or email me directly at fizzellgames+support@gmail.com.