Achievement Unlocked 1500XP

From time to time I get a message pop up that says “Achievement unlocked” then something about 1500XP. What does that mean and where do the XP go as they are not added to my total.

Are you on android? If so, it is an achievement on “play games” where you are signed in to. It is for handling an aircraft type for the first time, and the XP counts towards that account, nothing to do with WOA


Yeah What @Plane_Enthusiast Said