(edited by Mathzz.7501)
Gem Store Purchase hint bugged
I didn’t even know that was an attainable hint. Regardless, my hints are stuck at 92/93 or whatever the number is because of the mail hint. Many, many people have encountered the bug in hints, be it mail, or gem store (in your case) or something in WvW, or weapon skills, or something else. It’s just a bug that they haven’t either been able to fix, or it is a ways down on the list.
This would best be served in the Game Bugs sub-forum. =)