I have no clue what that is. Try reinstalling.
wouldn't that lose my progress?
You can copy the save file first, after reinstalling the game, all you need to do is putting it in the harem hotel file
I recommend never doing this, as this has a high likely hood of breaking your save permanently on PC or Mac.
I only doing this on my cellphone.
On PC, I just download the new one at the same place where I put my old Harem Hotel's file.
Nope, your saves are stored in a different file. You can delete all of Harem Hotel and your saves will be safe in appdata.