A. 1. Manually uncheck items: While this may be tedious, you can go through your cart and uncheck each item individually. 2. Use the 'Clear Cart' option if available: Some apps have a clear cart option in the settings or cart menu that allows you to remove all items at once. Check if this feature exists in your version of the app.

B. 3. Provide feedback: While I won't suggest contacting developers, consider using any feedback option within the app to suggest this feature for future updates.