RS250 SMB issue

I’ve trying to enable the SMB server option, but every time that i try to set the credentials and workgroup, always says a error. looks is the only way to upload files to the internal sdd from a pc on the same network.

@Carloslara

Please see the link below and let me know what is not working, I will be happy to help.
For Mac: www.youtube.com/watch?v=D7xz-ShEpnM
For Win: www.youtube.com/watch?v=Jps4ZFSoWYI

Thank you