This plus the mention of ProductHunt makes me think they fell into the trap of marketing to their fellow creators rather than their audience. That's a common mistake plenty of people make when building anything. Game developers market their games on game development forums, website owners market their sites on web development/webmaster forums, authors market on writing forums, etc.
They then forget that the typical person there is an industry peer or competitor rather than a customer, and that the chances of selling them on their product is slim to none.
They then forget that the typical person there is an industry peer or competitor rather than a customer, and that the chances of selling them on their product is slim to none.