Just wondering if the boxes are still glitched, or am I going to the wrong place to claim it? Just hit 7 years on Subeta 2 months ago. :)

If i'm not wrong... Go to "Personal" and then to "User Dashboard", once you are here the achievement must appears and the box must be placed in your inventory.

Yup they're still glitched. If you don't get it from the User Dashboard you'll need to file a ticket.