Hello, I'm trying to purchase energy. I'm using steam and I have steam overlay on. Yet whenever I go to make a purchase for energy it says I need to enable steam overlay when it is already enabled. I tried cutting off my firewall yet it still did not work when restarting it.

My system:
OS X El Capitan
MacBook Pro (Retina, 15-inch, Mid 2014)
2.2 GHz Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB