I have been trying to get my Onn Android Box work with ScrCpy with no avail. When I can connect it, it just shows a blank screen on ScrCpy. When it did show me what's on my box it does not sync with the activity when I do an action with ScrCpy. Any fixes?
Correct me if I'm wrong but scrcpy appears to be some kind of gui for adb. So, my suggestion would be to just use adb. You will find extensive online documentation to do exactly what you want.