I have latest version of IPTV Smarters Pro with a Himedia Q10 Pro android box with inserable internal hard drive. I also have it on Firestick 4K. When I select a channel it goes fullscreen. After a while it kicks back to the EPG with a screen box in the upper right hand corner of what I am watching. Any ideas what's causing this. Cleared cache, reinstalled Smarters, etc.