I have no idea how it works, but you should always get something from your game... I'm sure you either misinterpreted the rules or got scammed
some game creators practically make their living from their adult games that they release on itch io ( https://monsterboxgames.itch.io/ or https://strange-girl-studios.itch.io/ ), this website has been supporting them from the very beginning of this type of games, I know this because I was there when it started, What's more, I can say that they even glorify this type of content, their website, their rules