The main problem is the lack of communication, regular posts on their patreon showing even the boring stuff like programming the engine should be enough to satisfy many patrons, i mean between the 0.6.5 progress update and their next post there is a gap of three fucking months, almost four and between 0.6 and 0.6.5 a 9 months gap. The other big problem is that they constantly delete and change things in their game just to please certain groups, which has made them lose a lot of followers, like deleting the whole voyeur route with Melissa because people thought it was ntr, or the sharing route with the professor. I know a lot of people don't like that kind of stuff and it's understandable, but others saw those actions as a betrayal of their own work and a serious waste of resources (the aforementioned routes where completely illustrated and animated).