Bilgewater Act II Minions?!?!

I've been doing arams as usual to get credit for the event. I've chosen Graves. So it told me that I need to kill 10 turrets in aram & that I needed to kill 500 minions. So far I've done 11 aram games in hopes I'd get credit. But it's still showing as 0/500 minions. I've been closing and logging into League, but every time I've checked to see if I got credit, it hasn't moved. At this rate, I'm not sure I'll even complete Day 2 of the event. Is there any way for me to get credit? I'm on a Mac.