If your Viki app freezes after watching one episode and requires restarting, follow these detailed troubleshooting steps to resolve the issue:

1. Log Out and Log Back In:
- Open the Viki app and go to your profile.
- Select the option to log out.
- After logging out, log back in to refresh your session. This can often resolve minor issues.

2. Restart Your Device:
- Completely power off your iPad by holding the power button until the slider appears, then slide to power off.
- Turn your iPad back on after a few moments. This can clear temporary files and reset the app's state.

3. Update the App:
- Go to the App Store on your iPad.
- Tap on your profile icon at the top right corner.
- Scroll to check if there are any available updates for Viki. If an update is available, install it as new versions may include bug fixes.

4. Clear Cache and Data:
- Unlike some platforms where you can clear the app cache, iOS handles it differently. However, removing and reinstalling the app effectively clears the cache.
- Delete the Viki app by pressing and holding the app icon until it jiggles and then tapping the 'X' to delete it.
- Reinstall the app from the App Store.

5. Check Storage Capacity:
- Go to Settings > General > iPad Storage to see how much storage is available.
- If your storage is low (less than 1 GB), consider removing unused apps or data to free up space, as insufficient storage can cause apps to behave improperly.

6. Report the Issue:
- If you continue to experience freezing problems, utilize the app's reporting tool. While watching a video, tap the settings icon at the bottom of the player and select "Report Video Issues." Fill in details about your problem to assist Viki support in troubleshooting the issue better - learn more.

7. Consider Other Network Issues:
- Check your Wi-Fi connection. A weak or unstable internet connection may cause streaming problems. Try resetting your router or switching to a different Wi-Fi network if possible.

8. Reinstall the App:
- After uninstalling, reinstall the app from the App Store. This ensures you have a fresh version of the app without corrupted files - learn more.

If the problem persists despite following these steps, report the issue through the app or seek further assistance from Viki’s support team for a more tailored solution to your specific scenario - learn more.