Information about why this achievement may not complete when you believe you are meeting the criteria

During periods of high login traffic, we may put you in a login queue.

Information about not receiving mats when disenchanting an item

What to do if you can't complete the quest Servant of N'Zoth and get corresponding achievement

What to do if you haven't received the full amount of currency due to reaching its cap

What to do if you're missing a music roll from the Warlords of Draenor Garrison.

What to do if you didn't receive the achievement for the Battler of the Dragon Isles meta-achievement

What to do if you have completed a full 5-mask Horrific Vision run and earned the "Symphony of Masks" achievement on one character but alts on the same account can't buy anything from Chreni.

Information about realm faction and populations

What to do if you experience the game switching monitor settings from full screen to windowed when launching, or during gameplay for Overwatch.