MY MASTERIES!

I just played a game, and then when I was checking my collection all my mastery levels were gone. I had a Mastery 7 Yorick, M5 Renekton, and a whole lot of others. I restarted the client and nothing changed. This is a big blow to me, and to be honest I kinda feel like crying. So if Riot could please fix this, it would mean a lot.