I just recently noticed that on all my Android devices, it doesn't appear as if I am connecting to any of my listed hosts. It goes through the motions, but all I see is a black screen on the host side and then it eventually just bounces back to device list screen on the Android. I can connect to the hosts using a Windows 10 viewer on my computer, so the hosts appear to be fine and functioning properly. I tried uninstalling and then reinstall etc. My android version is 220.127.116.11m11.20.0 and all my androids worked previously, so not sure when the problem started. Samsung S8 and Galaxy Tab devices.