Just bought G3. Finally got it working, but can't seem to load the add-ons.

when I get to when they ask for the serial number, I use the one from the G3 jewel case, but the next button will never light up, so I can't go forward. I have two add-ons, and both act the same way. It must be something simple, but I can't figure it out, and I hate holding onto "forever hold" on the help line.