Hello there!
Over the years we ran international servers and also language specific ones and we made the experience that players appreciate if they can play without being distracted by conversations in different languages. We don’t have any cross server matchmaking system for dungeons but you can always choose to start on a different server from your location.
That suck you guys should not make the same mistake that happend with elsword and just do 1 EU server insteand of all of thoses and let you change the idiom in the launcher or ingame for all the traslate idioms