I created a Coupons folder on my Windows 7 desktop, and when I ran adwcleaner_188.8.131.52.exe it identified the folder as PUP.Optional.Spigot.Generic and quarantined it. Making a new Coupons folder there leads to the same behavior. Creating a Coupons folder on the desktop of a different Windows 7 computer and on a different Windows 10 computer desktop gave the same behavior. I would attach the empty Coupons folder, but that does not seem to be an accepted type. I suggest you test it by creating a Coupons folder and running adwcleaner. Creating a Coupons folder elsewhere did not give a false positive. This would seem to be a false-alarm problem with significant consequences if a user's desktop Coupons folder contains valuable coupons, discount codes, etc. only to have them deleted by quarantine.