Identity Safe and Auto Login Problem

I'm running Windows 7 Home Premium, Norton 360 ver 21.3.0.12 and Firefox 30.0.  I brought over the Identity Safe vault passwords when I upgraded Norton 360 from ver 21.2.0.38.  Here's my problem: I visit a website that allows users to login with either their account number or username (but not both) and a password. I used the account number to login under the previous version of IS; now I use a username, but IS fills in both fields -- account number and username -- and the website gives me an error message. I deleted the login from IS and re-entered the information with only the username and password, but IS persists in entering the account number, username and password.

 

A similar problem was described by sandyhippo in "Identity safe & Auto login problem" from the community board dated 07-19-2010 07:16 AM, although sandyhippo was running Windows 7 Profesional.  When I follow the suggested repair steps, I don't see the ccsvchst.exe files in Task Manager and I have two Identity Safe folders in C:\Program Data\Norton\...\IdentifySafeDataStore folder, one from around the time that I upgraded Norton 360 and a recent one. 

 

Is the difference  that I'm running Windows 7 Home Premium? What are the correct steps for my OS? Thanks for your help.