What should I do? - 2

I've had a problem at Fortnite for 2 days. I get kicked out of everything after 2-3 minutes (creative mode, public get kicked out everywhere). It always says that it is due to a mistake by Battleye. I've never heard of Battleye myself. I don't know what else to do, it would be nice if someone answered me. (Games on pc)

Battleye is a kind of anticheat system and try reinstalling it

For me it says downloads that I downloaded it, but only after the problem has occurred