A. 1. Check the date range in your Tasks settings. Open the Google Tasks app, tap on the three dots in the top right corner, and select 'Settings'. Ensure that the date range is set to show all tasks. 2. If tasks are overdue, they may not appear in the main view. Check the 'Overdue' section in the Tasks app.

B. 1. Try refreshing the app or restarting your device to see if the tasks reappear.