Hi, I can Facetime from my ipad to the wife's phone. She can facetime me also. I tried answering on my Mac, but the camera icon was crossed out and the call wouldn't answer. Now I tried calling her from the ipad. No issues. Calling her from the mac and it shows that "... is not available for FaceTime" Any ideas why I can facetime from an Ipad but not from a 2012 macbook pro? Thanks!