I just installed the latest Stellarmate OS on my RPi3. I am also using the newest Stellarmate App on my iPad. The app is set up to connect to the gadget, no problem there.
That said the connection is lost as soon as I am closing the app on my iPad. I can't switch to Ekos screen. If I return to the connect screen I see that there is no green light in the "Auto Scanned" list. Restarting "Equipment Profiles" does not finish. However, I can still connect to the device screen, e.g. starting a VNC login.