Blank screen issue with OS X 10.11.5!!!!! FIX!!!!!

All I get is a black screen after clicking play on my early 2008 Mac Pro. The last time this app was working was on El Capitan 10.11.3. Didn’t work on 10.11.4. And yes I did a complete uninstall and re-install of this from the Mac App Store and still get a blank screen, Please fix this. Now I’m on 10.11.5 and it still didn’t work. Then I updated the app in the app store to the lastest version and there is no change, just a black screen after clicking play.

samoyedprincess about Streaming: TV Shows & Stream Movies for Netflix, v1.2