Growth usually stalls at one step: too few people arrive, visitors don't sign up, users don't get to the good part, users don't pay, or customers leave. Eight questions point at yours.
8 questions · about 2 minutes · your answers stay in your browser
Your result
Too few of the right people know about it.
The product can't convince people who never see it. Go where your users already talk about the problem, tag every link, and see which place sends people who stay.
Either they came from a channel of people who never pay, the free version already does everything, or the problem isn't worth money to them yet. Look at who your active users are and what they asked for.
Your answers don't point at one weak step. The next gain is usually in the channel that brings the most paying customers: find it, and spend more there.