We’ve sent in a bunch of tickets and the GM replies always say the issue is still being investigated. But it’s been almost a month now! We really need to know if this is ever going to get fixed. People paid for this, we transferred to a server where the achievement was still available and we even got realm first LK. Not only that but other people did this on Maladath and angerforge and they ended up with the exact same issue 
It’s pretty sad that we haven’t gotten any real answers at all.