Great concept but seems to be not very accurate – CheckUp - check username or domain availability Review

Looks like your code needs to be updated for when a website changes their “no username exists page”... For example, Wordpress, eBay and twitch always say that every username is taken. Whenever you press on the icon to check, it will say that the username is not actually taken.
Review by kokenges on CheckUp - check username or domain availability.