Unable to play a purchased champion?

I just purchased Olaf a few minutes ago, and when I went to play him, he was available (at first). I selected him in teambuilder and when I pressed start to queue up, it gave me an error, "INVALID CHAMPION" or something along those lines. I haven't been able to recreate this because it caused another bug. Now when I go to select Olaf in teambuilder, he just doesn't show up at all. Pics are proof of purchase and a screen of Olaf missing from my champion pool.

EDIT: I WAS able to recreate it. When I visited his champion profile, it made him appear again, and I did the same in teambuilder. The same thing happened when I queued up with him. I'll add this screenshot to the bunch.