Try downloading it from browser.
sincerely beg u to fix this bug in the next update, i prefer the updating function of the desktop app
I can't control this, not sure why it happens.
It is cause some computers can't install RAR files with Itch it is werid mine included does this been trying to find a workaround but nothing yet
Other then going to the website mind you that might work send this guy the link if there is 1