Stellarmate app on the Android is a little fickle. If you close the app you are not always able to get back in. Right now I'm getting a spinning "Establishing Connection".
Earlier when it was connected I was not able to add any devices (camera, guider, focuser). To add a driver you click "add", but nothing is in the list. So maybe a little video showing on how to use the StellarMate App?
I did find where the VNC app was, so that's good (assuming I can get past the Establishing Connection message).