PS5 PRO Can't multi player with Friends

When I try to play multiplayer with a friend, it times out and won’t connect.
I am a Japanese who recently started playing this game.
I am playing on PS5 PRO and when I join a friend from the home screen, or send a multiplayer invite to a friend after continuing the game, or join from the friends view in the multiplayer of the game main menu, I get a “connection timed out” message and cannot play with my friends. I can’t play with my friends.
I have tried every possible way and the connection has timed out and I can’t play multiplayer with my friends, but for some reason I can join a stray multiplayer session with them and not with my friends, so I think it’s a complete bug.
Please make a patch to improve this game as soon as possible because the development of this game is not finished. Thank you.

I agree that development isn’t finished, but it has stopped.

Of course you can submit a bug report over the gz-homepage.

What’s your NAT-Type?