You just need to downgrade the player to 1.0.9 apply some community made patches that are available in this forum and you are good to go, everything works. Android 7 doesn't give anything useful to the player anyways right now and Kodi 17 is just a mess as well. Android 5.1 and Kodi 16.1 is a safe and working solution.
Thing is I bought this box hoping I would get window mode on Android 7. Not that I have seen it in use, but I thought that was a native part of Android 7.
Kodi 16.1 is no longer on google play, as the release candidate of Kodi 17 has been released, so even if I turn the beta testing off then it will still be Kodi 17 now (unless I side load, but I was trying to get away from 16.1 as I like the default skin of 17 more).
I bought this box for the above reasons primarily. My minix u1 worked fine in 16.1 and android 5.1.1 so this is hardly a step up for me then.
But there seems to be some hope to get it working at least. The seller seems to be happy for a return if it doesn't work as hoped.... But I hope it all works.