Hi , I've been using this app on 4 android devices with great success. I view up to 16 cameras simultaneously with the mobilescreen on as long as i want.All of a sudden the app will only let me view these cameras for about 30 mins and then the app goes blank and i can't see any cameras. I have tried only watching 1 camera to see if things would work but similar problem, the app goes blank after 30 or so minutes. Ive reinstalled the app cleared cache nothing works like it worked before.