To resolve the issue of the Weatherology app not functioning on your Pixel 7 and being stuck on the opening screen, follow these step-by-step instructions:

1. Force Stop the App:
- Open the Settings app on your Pixel 7.
- Navigate to Apps & notifications.
- Select See all apps.
- Scroll down to find Weatherology (or the name of the app in question) and tap on it.
- Choose Force stop and confirm by tapping OK.

2. Clear App Cache:
- In the same app settings menu, tap on Storage & cache.
- Select Clear cache to remove temporary data that could be causing the issue.

3. Clear App Data:
- If clearing the cache doesn't resolve the issue, you may need to clear the app data.
- Still in the app's settings, select Clear storage or Manage storage and then choose Clear data. Please note that this may result in loss of any saved settings or preferences within the app.

4. Reboot Your Device:
- Restart your Pixel 7 to allow the system to close any running processes associated with the app. You can do this by pressing and holding the power button, then selecting Restart.

5. Update the App:
- Open the Google Play Store and search for Weatherology.
- If an update is available, tap on Update. Updated versions may contain bug fixes and improvements.

6. Check for System Updates:
- Go back to Settings and scroll down to System.
- Select System update and check if there are any updates available for your device.

7. Uninstall and Reinstall:
- If the problem persists, consider uninstalling the app completely:
- Navigate back to the app settings and tap on Uninstall.
- After uninstalling, go to the Google Play Store, search for Weatherology, and reinstall the application.

8. Check Permissions:
- Make sure that the app has the necessary permissions. Go to Settings > Apps & notifications > Weatherology > Permissions and ensure all relevant permissions (e.g., location, storage) are granted.

By following these steps, you should be able to resolve the issue with the Weatherology app on your Pixel 7. If problems persist, consider reaching out to the app's support for further assistance.

For more details on managing apps that aren't working properly on Pixel devices, you can refer to this guide - learn more.