This is a Kodi 16.1 / Android 7 compatibility problem, it's not specific to Q5/Q10 Pro.
Kodi 17 does not have this problem.
A solution for Q5/Q10 Pro running Android 7 firmware and Kodi 16.1 is to install this patch which will create directories in the file systems for all attached storage according to drive label and UUID (HDD hardware ID). You can then add movies to kodi by navigating in Kodi to root/mnt/media_rw/disk-by-uuid/<uuid> or root/mnt/media_rw/disk-by-label/<label>: http://www.futeko.com/newforum/index.php?topic=1421.0