When I go on youtube and I'm not signed in, it's mostly fine except for lag in typing, but when I'm signed in, I get the list of my subscriptions on the left, but when I click on my icon, notifications, or on a video to save to watch later, it acts like I'm not signed in. When I click on watch later, it gives me a message to sign in, and when I click it, it gives a 405 error, "The request method GET is inappropriate for the URL /youtubei/v1/browse/edit_playlist. That’s all we know." Youtube works fine on chrome and the mobile app, and I've tried clearing the cache and cookies, tried to start on safe mode, refreshed firefox, and tried to reinstall firefox, but it didn't do anything. I tried this with a different account, and it still gave the same problem. The images show the problem.