The problem of not seeing the players in the party and not being able to play with the players in the party

I can only see the players on the Mystel and Seren server when I enter a dungeon from the Yurian server, I can't only see the players on the Shakan server, and I can not cut the dungeon with the players on the Shakan server, I can only see the players on the Seren server, the Mystel server, and the Yurian server, and I can only cut the dungeon with them.How can I fix this problem or is there a solution to this problem?

I really love the game, but because of this problem, I started to dislike the game, please help me.

Now I can not see and play not only the players on the shakan server but also the players on the other servers. I hope this problem will be fixed as soon as possible.

Okay, thanks.I hope you can find a solution as soon as possible. Thank you very much for your reply.