Yikes! Have you tried uninstalling and reinstalling the app to check if there's any difference? Also, please check if your device has any pending OS updates available. Keep us posted.
Thanks for trying these steps. Please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues.