To resolve the issues you are experiencing with the Osmo Parent App crashing on your Amazon Fire tablet 8, follow these detailed steps:

Check for Updates

1. Check for App Updates:
- Open the Amazon Appstore on your Fire tablet.
- Go to App Updates and check if there’s an update available for the Osmo app.
- If an update is available, download and install it.

2. Check for System Updates:
- Go to Settings on your Fire tablet.
- Scroll down and select Device Options.
- Tap on System Updates and check for any available updates. Install if necessary.

Clear App Cache and Data

3. Clear Cache and Data for the Osmo App:
- Go to Settings on your Fire tablet.
- Tap Apps & Notifications, then find and select the Osmo app from the list.
- Tap Storage, then select Clear Cache. If the issue persists, go back and select Clear Data.

Reinstall the Osmo App

4. Uninstall and Reinstall the Osmo App:
- From the Apps & Notifications section, tap on the Osmo app.
- Select Uninstall and confirm.
- Revisit the Amazon Appstore, search for the Osmo app, and reinstall it. This ensures you have a fresh installation of the app.

Restart Your Device

5. Restart the Fire Tablet:
- Hold the power button until the shutdown menu appears.
- Select Restart and wait for the tablet to reboot completely before opening the Osmo app again.

Check Installation Method

6. Verify Installation Method:
- Confirm whether you downloaded the Osmo app from the Amazon Appstore or if it was sideloaded. Using the official Appstore typically ensures better compatibility - learn more.

Further Troubleshooting

7. Factory Reset (Last Resort):
- If none of the above steps work, consider performing a factory reset of your Fire tablet. Ensure that you back up important data before proceeding.
- To reset, go to Settings, choose Device Options, then tap Reset to Factory Defaults.

Follow these steps systematically, and they should help in resolving the crashing issue you are facing with the Osmo Parent App on your Amazon Fire tablet 8. If problems persist, consider reaching out for support through the Osmo forums or Amazon customer service - learn more.