The mobile app works fine for our iOS users but Android users cannot connect because our version 3.5.11 site (we plan to go to 3.9 soon) uses United States Department of Defense certificates which are not trusted by Android.  I have installed the certificates in Android and I can view our site in the Chrome browser with no errors or warnings, but the app will not connect.  My thought is to allow a certificate bypass similar to the Tasker app.