I have developed a mobile application which contains and displays pictures of celebrities. All pictures are licensed with a CC BY-SA. The app is commercial.
Unfortunately, when I published the app on Google Play, Google rejected it for "violating Intellectual Property policy."
I have made an appeal for my case which led to a discussion in which I learned my app was rejected because: "images related to films are most likely protected by the various studios that produced and released them. It is reasonable to assume that these would not be made legally available in public domain or via Creative Commons as most studios are extremely protective of their intellectual property."
I emailed back, saying that all pictures had a CC BY-SA license with examples like this one: https://commons.wikimedia.org/wiki/File:Emma_Stone_2011.jpg (license is at the bottom of the page)
I am no law expert, so maybe I have overlooked something. I thought using in my app pictures with this license would prevent me from such copyright problems. Have I missed something?
Thanks for your help.