[CLIENT] Store on the fritz....again..

Once again, the store got all glitchy. After I click on it, I can't go to any of the other tabs but Featured, and can't buy anything on the featured page or anywhere else. If I try to click on one of the other tabs, it times out ( http://prntscr.com/6klnbe ) and then takes me back to Featured. Or in the case of "Purchase RP", brings up a notice that says "ERROR Your session has expired" ( http://prntscr.com/6klnbe ).

EDIT: I've tried many things, restarting client, restarting client as administrator, and restarting computer, then the first two again. Nothing worked.

EDIT2: Managed to actually get to the champions tab. But when I try to buy something, nothing happens ( http://prntscr.com/6knkkt )