Hi there. We are on Henge of Denravi, which is a NA server. As per the Wiki, "Region: This indicates the location of the data center that stores your account information; it has nothing directly to do with your geographical location. Players from one region cannot enter the same maps as those from any other, e.g. those with NA home worlds cannot play with those based on EU ones." In other words, I believe you could join, but you won't be able to be in the same map instances as the rest of the guild, since all our members are currently in NA (we do have members from Europe, however, but they are also in NA servers)