Just tried this tip from the Password Issue Thread.
It worked for me just now. Please post back here if it worked.
"Ok got in here is what I did: open the N7 launcher, in the upper left is the Server and host category, leave the server category alone. in the host category copy and paste this into there: 217.160.5.19 and then hit play I was able to log in no problem adding that IP address to it."