The bug that killed every signup for 4 days

The bug that killed every signup for 4 days My signup flow asked users to pick a paid plan before they had ever seen the product. Conversion was rounding to zero. Vantage launched on April 22. By April 28 I had four signups. Four. The site was getting traffic — Vercel Analytics confirmed it — but almost nobody was making it from the landing page to a working account. I assumed it was the price. I assumed it was the copy. I assumed it was the demo. I rewrote the hero three times that week. It was