Hi Mark,
I clicked on the "help" button at the bottom of your gedcompare page and found more information including this:
"Add buttons don't appear on the main table until all suggested matches in your GEDCOM have been confirmed or rejected."
This is probably what is going on. I believe if you complete the procedure then the "add" buttons will show. You will be able to click on those to create new profiles.
Please let me know if that solves the problem or not. I'd like to make sure you are all set.
- Keith