Hi there! I see you're having trouble with the Peet's Coffee app not working. Could you tell me a bit more about what exactly is happening? For example, is the app not opening, crashing, or are you having issues logging in or placing orders? Any specific error messages would be helpful too.

While I wait for your details, here are some basic steps you can try on your Android 10 device with WebKit:

1. Clear the App Cache and Data:
- Go to Settings > Apps > find Peet's Coffee in your list.
- Tap Storage, then choose Clear Cache and Clear Data. This helps remove any corrupted temporary files.

2. Restart Your Device:
Sometimes a simple restart can fix minor glitches.

3. Check for App Updates:
Open the Google Play Store, search for Peet's Coffee app, and see if there’s an update available. Installing the latest version can resolve known bugs.

4. Reinstall the App:
If clearing cache/data and updating don’t work, uninstall the app completely and reinstall fresh from the Play Store.

5. Verify Account and Login:
If your issue involves login or payment errors, try resetting your password and make sure your email is verified. Sometimes syncing credentials again can fix unexpected login hickups.

If you’ve tried any of these already, please let me know which ones, and what you noticed. That way, I can help you with more specific troubleshooting or escalate if needed!

Are you able to share exactly what happens in the app when you try to use it?