[CLIENT] Gameplay Not Displaying

I'm trying to buy Runes, but when I click the Gameplay tab in the Store it displays a blank page. I can open all of the other Store tabs perfectly fine; it's just Gameplay that won't open.

So far I've tried closing the Client, flushing my DNS, and starting the Client again. It still doesn't display the Gameplay tab. I'll try restarting my PC and anything else I can come up with, but at this point it seems like it's not something I can fix.

Is anyone else having this issue, or is it just me? Thanks for any help you can give! ^__^