Anti-Cheat not loading?

Just recently, I've been having issues where I start up Insurgency Sandstorm and a browser for Epic Games, to link my accounts pops up. I already have about 70 hours clocked in on Steam. Is there a reason this is happening? Because every time that browser opens its asks me to link my Epic Games account with my Steam account (they're already linked). But this ultimately leads to me being kicked from matches because "Anti-cheat failed to load" or whatever....I've never heard of this before and its irritating.

P.S.

I'm still new to PC and have no clue what I'm doing

Many people have this problem.....