Hi, So I'm trying to download this game to give it a shot, i tried both (new) and the other one, I click download, and when it's ready and downloaded, It's gone, and "install" any idea how I can fix this please?

the error : while extracting ( 7days with sister/img/characters/!SF_door1.png): dmc _unrar_extract_file_with_callback: error44 RAR 5.0 block checksum doesn't match

You need a new version of winrar or try to unzip using 7zip. Perhaps the problem is in downloading from itch, then you can download the test version (0.5) of my game from discord. If it does not help - wait for the game update.