Files into a External HDD connected to router not recognized by pi3/osmc

Hi friends,

I have this problem: I connected an external USB my ZTE F-680 and configure it in storage sharing.
IP address of modem-router is 192.168.1.1 and the path to reach the shared folder is //192.168.1.1/samba
From my pc with windows 10 and with my Android 6.0.1 i can reach it without problems and see the files that are inside, but from my Pi3 with osmc I see the disk, but i can’t see the files that are inside the disk (I tried to reach it through smb://). when i connect to my Pi3 by ssh and i do a mount, i can see the disk but de files have a strange name, with ugly caracters (like Confused??%^^^^^^)

Any idea where is the problem?

Thanks for all