Can't unlock car/bike mount reward

I’ve uploaded 80 photos, and have now unlocked the Level 1 reward for a free car/bike mount. Oh boy!

But, when I tap the button to claim my reward, it returns a 404 error.

How do I submit my address for my free car mount?


About six months ago the store page was taken offline.
That was the page where you could enter your address and receive free mount.