Nintendo Switch connection error?

Mo
- in Nintendo
1

I have a problem I wanted to play Super Smash Bros ultimate with my friend. I've played this for a long time and so far I've been able to play with every player.

But I couldn't do that with my boyfriend. He can't come to my arena and I can't come to his. However, my other friend can come to his and my arena

But if my friend (who can play with both of us) makes an arena and he (with whom I can't play) is in the arena and I try to come in, it doesn't work either.

There's a connection error with error code: 2618-0516

I have Nat Type B like all of us

And we all have the same Internet settings WPA2-PSK (AES)

I don't know, could someone help me?

Ne

This is the promised "extended gaming experience". That is normal