Birbal stumbled across the third fool while the latter was looking for something at night. The guy was looking under a streetlamp and couldn't seem to find whatever he was looking for. Birbal asked him what he was looking for so frantically. He explained that he lost his wedding ring in a dark alley a short ways away.
Birbal is confused and asks him why he wasn’t looking in the alley, and in the street instead. Get this. The guy replies that he’s looking under the streetlamp because there’s more light there.
Moral of the story: dont ask on HN, go ask the folks who dropped off.
Here's a suggestion on how you could do it. Take a look at Tumblr or Intercom and see how they collect an email first and then ask for a password and eventually more information. Collect an email address just before anyone clicks get started. So that you have a way to reach them in case they dropped off and helps you figure out at what point folks are dropping of
(My thesis: Your shady credit card collection process is the culprit. Typeform doesn't seem to fit your story of helping folks be more professional. If you are a professional trying to help freelancers be more professional, you should be using something more professional)
Sorry, if you felt, I called you a fool. Perhaps reading the story and learning who the 10th fool is would make you feel better. :-)