If all it's showing for the drive status (option 20->13) it sounds like it's not mounted properly. After "Available Shares" should be few lines of text with the drive status. It should look something this:
//QNAP-NAS/Music on /mnt/QNAPWindows type cifs (ro,relatime,vers=1.0,sec=none,cache=strict,domain=QNAP-NAS,uid=0,noforceuid,gid=0,noforcegid,addr=<IP>,file_mode=0755,dir_mode=0755,nounix,serverino,mapposix,rsize=61440,wsize=65536,echo_interval=60,actimeo=1)
At this point, it's hard to say why it's not mounting properly. It could be a permission issue with the folder you're trying to access. What parameters are you using when you try to mount it? If you're using a username and password, don't post them.