The complaining and scolding is a result of lack of communication between developer and supporters. There has been no visible* progress of the game in a year+
Viewing post in Monster Girl Island: Prologue comments
Did you ever thought about him being bored about all those when/where questions and thats why he doesn't answer? It was clearly stated that there won't be any more update for this cuz he is working on the full game, which is not 1-2 year to make. Even an experienced big studio is working on a game for 5+ years and however this game is by far not that big BUT THERE IS ONLY 1 PERSON HERE. So think about it and read carefully what he said before complaining. People should learn to read the ingame notifications and patreon/discord/website ones of a developer before scolding and asking stupid questions.