I did what the instructions said... I copied the code, went to the Control Panel, then to File Manager, then wasn't sure which file I was supposed to paste it into (the one that ends with html, or not?) but I tried a few different things and nothing worked.
Or rather, I did get the code to copy, and if you click it, it takes you to the lunarpages site. But it's displayed as CODE, not as a cute little icon. Any suggestions? I am guessing this is being caused by my using a Mac, but I'm not sure.