Completely off topic, but developing products for developers (especially subscriptions) is difficult.

I say this as someone who has been selling to developers for 30 years as one of my core functions.

It's hard to sell to a group who premise their buying with "I could knock this up in a weekend , and do it better." Not to mention all the developers who have no work to do so code "alternatives" to Show HN.

I survived by finding an incredibly tiny niche - really a tiny niche in a tiny niche - plus doing a lot of other work while building a brand. My advice is - there are easier groups to sell to.