Hi there! Thanks for reaching out. I understand that you're able to watch some episodes on your Kindle (Android OS 9), but certain episodes cause the Viki app to kick you out or crash. To help you better, may I ask a couple of quick questions?

1. Are the crashes happening only on specific episodes of particular shows, or does it vary?
2. Have you noticed if your internet connection is stable when these crashes occur?
3. Have you tried any fixes already, such as restarting the app or your device?

Meanwhile, here’s a step-by-step guide to troubleshoot the crashing issue:

1. Close and Restart the App: Fully close the Viki app from recent apps and reopen it to clear temporary glitches.
2. Check Internet Connection: Ensure you have a stable Wi-Fi or mobile data connection, as unstable connections can cause playback crashes.
3. Log Out and Log Back In: Go to the Settings within the Viki app, log out of your account, then log back in. This can refresh your session.
4. Clear App Cache: On your Kindle, go to Settings > Apps > Viki > Storage and clear the cache. This removes temporary files that might cause problems. (Avoid clearing data unless necessary as it may delete your preferences.)
5. Update the App: Make sure the Viki app is up to date via the Amazon Appstore or Google Play, depending on your device’s app source.
6. Reinstall the Viki App: If none of the above works, uninstall the Viki app and then reinstall it fresh. This often fixes corrupted files causing crashes.

If after these steps the issue persists specifically with certain episodes, it could be an issue with the content itself or its compatibility with your device version. In that case, let me know, and we can try further checks or escalate as needed1.

Please try these out and tell me what happens! Are you satisfied with the solution I provided?