Friend is constantly kicked out of Fortnite after the game starts. But why?

My friend is constantly thrown out of the round shortly after he landed and then gets this error message. He can come into my lobby but as soon as the game starts, he'll be kicked out shortly after landing. Does anyone have any idea why this might be? Or. Maybe someone has the same problem? If he were banned, he could not even join the game… And he also says that he has never hacked himself to 100% or used any cheats. We're grateful for every proposed solution:-)

Are there any problems with other online games? Then it could be on the internet.

No, he can play everything else and play online with us. That's why it's so amazing…

Maybe he has to release a few ports in his router so that the game has no more problems.

He just said to me, he would have already tried with the port release, have indeed looked at synonymous already on Youtube various solutions and tried: - /

There are several problems for this problem [taken from the error message]:

Internatlag… It may be that he has a too high ping which could cause a heavy lag which causes the server to think he teleported himself
IP… Danit could mean that the server has an ip attached that belongs to a vpn network / should he should use a vpn he would like to switch it off… Please Notice: This is an automatically translated article!
cheating… It does not have to be that he must have cheated but it may be synonymous that the client has made a mistake in the voice and the faulty data server is a modified version. In that case you should reinstall the client or repereiren

if that does not help you turn to epic games