Yikes! Just to confirm, have you tried uninstalling and reinstalling the app to check if there's any difference? Also, restarting your device can fix the issue. Let us know if this helps.
Appreciate the info. 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 back, we do review everything and use the details to investigate and fix issues. Thanks!