Cannot access my WD Sharespace 4TB from Windows 7

I Finally could Join Domain, locate users and groups, and set folder works normally on windows XP computers , but not on Windows 7, it keeps asking me for login username and password and it wont log me in unless I used the local username and password and not the domain credentials. How can I figure out this problem to let Windows 7 users access it on my Domain?

My Device info:

Device Name WDShareSpace 4TBNAS

Firmware Version 2.1.3 with MioNet 

They should all be able to access if the domain users follow the same criteria on this link o.o