Fix Youtube Comments Not Loading. Go to settings, then safari and tap clear history and website data. Fixes for mobile youtube users for users on iphone, the first way to clear your cookies and cache is to:
Either way it's up to the channel owner to restore the comments to visibility. To open an incognito browsing window, you can use the keyboard shortcut ctrl + shift + n in a chrome tab. If you are using the facebook app on mobile, close it, and open it again.