[HELP] MHP3 Lobbie Problem

[Aurora866]

I quit the game without finding a solution, so I watched it now.
We've played together before, and as described above, if I go into the lobby first, I can play with anyone without any problem.
And now that I'm back on MHP3, I can't see anyone at all regardless of going in first.

I want to play the game again now, but now I can't because I can't see anyone.

My reply is very late, but I would appreciate it if you could give me a solution yet.

(Considering that no one is seen at all now, it seems to be just a problem with the Asus router. It doesn't mean it's defective, but the router itself blocks the port. Like this.)

(In the past, even if the problem was tricky, I could see people if I went into the lobby first. But now no one can see it regardless of the order of access to the lobby.)

PS : The thread upload was slow, so I accidentally uploaded two, but I deleted one.