Getting error while trying to add addon domain

[nilayanghosh00736]

I tried to add this domain, w0x.in, as addon domain, but got an error "The directory, /home/nilayan/public_html/w0x.in could not be created. "
Please help.
Also what are the nameservers?
Regards

[Corey]

I had to fix something with your account which required a password reset, you should login to the account panel at https://x10hosting.com/control and reset your password.

Name servers are ns1.x10hosting.com \ ns2.x10hosting.com