So I have this problem, I built an mvp and signup page, attracted a lot of page views, got quite a few signups for the free tier (50 for example) and they were all of the type: sign up, login, look around, never came back. So using these 50 signups/emails as my network, I've done two things; emailed a survey link, and emailed just asking for feedback. And nothing, not one single response to either the survey, or the email. Of the 50 only one unsubscribed.

What am I to make of this? Is the fact I got 50 signups a signal the product has value and I should continue, or does the fact users don't return a signal the product is crap I should scrap it? I'm really at a loss here.