Here is the web site to sign up for eScrip:
If you want to check on your own account and see what groups you are supporting you can check here: https://secure.escrip.com/supporter/sla/index.jsp?app=change-id&src_page=change-id&path=http://www.escrip.com/index.jsp you enter your email address and press enter.
The groups are listed under your name on the next page (top - middle).
From what I can tell your supporter id does not match the number of your Safeway card.
Once you are signed in you can go to Sign in to my eScrip to view purchase activity and get more info and also change/add which groups you want to support by clicking on Search for merchants in your community.
Let me know if you need more information. Sonya