I cant use the twitch game launcher on my mac, it wont work.
The Twitch Launcher is PC only at this time. https://help.twitch.tv/customer/portal/articles/2574721-twitch-prime-game-code-redemption-and-installation This forum is for third party developer support. I would recommend contacting support at help.twitch.tv in the future for these types of questions. 
Thanks,
Dallas