Fortnite network connection aborted Xbox One?

Recently, when I try to join in a game (the lobby works) it loads something but then just rausgekickt and there's "An error has occurred Network Connection Lost" The ping in the settings is strangely on Auto (9999 ms). Could it be and how do I fix it? I've already tried: Router restart, account on and log off game restarted, restarted Xbox, LAN cable tries to reset button on the router pressed

Werdydirdy, did you choose the right server region?

Or did you ever try to connect via Wi-Fi?

I have tried almost all regions in Fortnite and of course I'm connected to Wi-Fi all the time LAN does not work either