Uh-oh! Have you tried uninstalling the app, restarting the device and restarting it to see if that makes any difference? Also, could you check if your device is updated to the latest OS version? Let us know.
Appreciate your efforts. As a next step, we'd recommend sending a feedback report directly from your YouTube account with these steps: https://yt.be/help/RYwc . While you may not get a direct response, we do review and use the details to investigate and fix issues.