I updated the gateway app 5 minutes ago to latest version - my phone is an moto g (gen2) running android 5.0.2. The app worked sort of ok on previous version but now its giving a message as follows.
"Screen not supported - tThe minimum screen size is 640x960"
From what I can see under the message though looks to me ok I can see "00 EL34 Heaven" and all the initial presets not covered by the message but thats it nothing works so I guess thats it after about 2 and a half weeks of being apple to control from the app I now find that I cannot do anything from the app.
Thank you for your comments, I would suggest switching the phone off, but before you do this make sure the app is fully closed and not running in the background.