Don't see the "Add a Credit" button?
If you are not seeing the orange "Add a Credit" button at the top of your credit listing, you most likely need to clear your browser cache.
Here are a few websites that explain how: I can put a troubleshooting page on the site that allows people to submit issues and provide a link to instructions on how to clear cache from a variety of browsers, like:
How to clear your browswer cache -- University of Iowa
How to clear your cache — PC Magazine