LFGing in NA region instead of EU

[arnitheking.8427]

So I was looking for a frac CM + t4 group in lfg and joined a few groups, but everytime those players were actually on an NA server and I couldn't get into the frac instance. I wasn't guesting, my main is on WSR and I've never been in NA, my mistlock sanctuary instance was an eu instance too. So I have no idea why my lfg is NA only, it makes no sense to me but I'd love to know what is causing this