Forums → Support Forum → What is up with this weird authenticate user message and why does it exist?

Literally this makes no sense. It only happens after I am on the site playing a game for a while that it gives this message and wont let my comment unless I reload the whole site. It tells me to authenticate the user, but I'm already logged in. How much more authentic can I possibly be?

P.S being able to actually post images using the tool called images would be nice. Linking to a website isn't the same as posting an image or screenshot.