[App_rpt-users] Iax android app

Is anyone else having problems with the iax android app? My problem is if the app happens to go into the background or my phone screen shuts off. When I go back to the app the PTT is grey and I am unable to use it. It still shows me connected. I just trying to determine if it'd just my phone or the app. Also the exit button doesn't really work. N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086