Your footprint should be available on that page—you should be able to see your annual total, your breakdowns by category, and how that compares to global averages. The "Email me my footprint" button just sends you a link so you can save it. I could see how you may want to change the email you entered once you get there though. We should add that!
I just ran through the page after seeing this comment and was also confused. To me the phrasing and styling of the "Email me my footprint" button makes it feel like the end of the process and that I need to click it. It didn't immediately occur to me that I should keep scrolling down. In my case I happened to scroll so that the "Step 3: Offset" was just out of view which made it feel even more like an "OK you're done!" button, but I think even if I saw there was more I would've wanted to click the button expecting that to be the way to see my results. Maybe the two of us are outliers but it might be worth it to explore some small design tweaks here. Love the concept!