66 organic sign-ups in 30 days, but 0% response to my emails. What am I doing wrong?

I recently went live with my product, focusing primarily on SEO, X, and Reddit for distribution. After 30 days, the momentum is starting to build: I’m seeing 5–6 organic sign-ups daily and now have a base of 66 free users.

According to Microsoft Clarity sessions, these are high-intent, real users—they are spending significant time in the app and exploring features. However, I’ve hit a roadblock with conversion and engagement. I’ve tried nurturing and feedback emails, but I’m getting zero responses.

I’m stuck. While I'm okay with them not paying yet, I’m struggling to get the feedback I need to improve. How do you get active users to finally start talking?