I still cannot reproduce your issue. You can quit from Network Explorer, delete the NR registry key for the current user, then try to set the password and options again.
Btw, the credential information ( user name, password and domain ) gets stored after you sign in successfully. If you didn't sign in and quit, it won't get saved. Just in case you didn't try this.
If you still get problem, it would be better to get the log file and send it to us, so that we can help you figure out the issue.
KevinZ - NeoRouter team