Permissions issue for owned directory

[TheMinecraftGuyGuru]

I have a very large smb share mounted to the host that I am trying to backup with this, and it is mounted as root:root, so it shows up as owned by root:root in the container, where I believe in the container it is supposed to say app:app, and the backblaze program doesn't see that mounted drive. any ideas?

EDIT: The issue is actually completely different, by going into the directory explorer through clicking settings-> set temporary data drive, I saw that the icon next to the D drive I mounted is recognized as a share. what can I do to remedy this?