[logari]

You are falling into the "build it and they will buy" trap. Supply-side marketing only when the product is disruptive, like an IPad, or smart phone.

Otherwise, you need very compelling reasons than just liking to create customers. This is because when people say they "like" something, they are mostly not sure exactly why. It could be an emergent effect from various causes.

If they use it but don't convert to buyers, the problem maybe that they don't think your product is valuable enough to warrant money expenditure. Either your marketing message is weak, or there are too many rivals offering similar value; or in a less likely case, your product doesn't solve the problem it was designed to solve.

It is hard to know what to do next given limited information in your question, but a general solution would be survey your customers for what would make them pay for it...and if not, why. You could also keep reaching audiences and hodl while improving and tinkering. Sometimes these things take time.