The content saw multiple immediate hotfixes on day 1 and then for like a month 90+% of the discussion was people coming in and complaining about those bugs which would imply multiple people had purchased the content when it was less than a day old and immediately put it up for piracy and then these people are all pirates.
Read the mod page, it should be compatible with every version but it just changes the Futa client not makes Hazumi a futa.