[CLIENT] Unable to use the in-game store

So I'm having a major issue with the in-game store now.

I cannot buy anything in the store right now. I can click on the different tabs on the left side, but none of the images for anything are showing up (I can't see the splash art for any of the champions, or see the different runes etc), and I am unable to click on the 'unlock' button for anything.

I'm trying to buy the final runes for my Leona rune page but I can't do that with this issue.

Anyone else have this issue right now?

~Jascha