@YouTube why do I keep being signed out? But when I go to sign in, it just instantly tells me there’s a problem signing me in? So I just go around I a loop until about 6-10 tries later it manages to sign me in. I think click on my sub box or history and it signs me out again?!?
Strange, does this happen using a desktop or a mobile device? If on a desktop, try clearing your browser's cache and cookies then check. If you're using a mobile device, try uninstalling then reinstalling the app. Let us know if it works!