I ripped "The Equalizer 3" UHD disc as an .mkv file and copied it to the USB drive attached to the ZX9. It shows as present on that drive when I use a Windows file browser. However it does not appear on the Zidoo poster wall. Neither in the Zidoo web app nor on the player itself. And a search within Zidoo does not find it that file. The Equalizer and The Equalizer 2 appear on the wall in a collection, but 3 is not in the collection and is not shown as a single movie on the wall. Both EQ 1 and 2 have an .nfo file and two jpg files on the USB drive. The Equalizer 3 only has the movie file (.mkv) on the USB drive. I double checked the spelling of the file name and it is correct. Does anyone know what could cause this problem?