Periscope viewer

I have just spent €2,99 on this App and all I have on screen is a random video stream in Russian and the right hand part of the application vision area is blank, to be more precise completely black. I am very surprised that Apple would allow this to be on the App Store and I feel as though I have thrown my money down the drain. I imagine that all I can do now is wait and hope that a future update sorts out the issues with the software. (iMac 27-inch, Late 2013) OS X El Capitan...

Simon Lovell about Viewer for Periscope, v1.1