Yeah, I'm not sure either. I think someone had just used the Patreon page (which was also falsely reported) as evidence to get the game pulled from Itch. Then they lied on pixivfanbox and said the game got pulled due to copyrights issue with certain characters (which also wasn't the case). You can see the evidence here from the Fanbox comments page (by this point, they changed their name from 16may61 to 1661 before they were banned from Pixiv, due to constant harassment on Mofu-san comments section).
This person was also the one who maliciously forced Mofu to make a Patreon page and banned them from continuing their Subscribestar page, knowing it's easier to falsely flag something to get the Patreon page pulled, which could then be used as ammo to get the game banned here. Evidence here:
Just glad the misunderstanding is cleared and the page is back.