A. 1. Backup your data: Before updating the app, ensure you have backed up any important data or progress. 2. Check for updates: Make sure you are using the latest version of the app, as updates may fix bugs related to coin loss. 3. Monitor your coins: After an update, check your coin balance and report any discrepancies to the app's community forums for advice.

B. 4. Avoid frequent updates: If possible, wait a few days after an update to see if other users report issues before updating.