Can a legitimate security expert prove that there is "Phishing" on the site?
This service is for web developers to use when doing prototypes or ideas in shorter code base. If it can be exploited to write dangerous code that can be sent to an unsuspecting victim, it needs to be proven and reported.
Otherwise, WOT (and Codesandbox.io) needs to settle this because there are false reports of it being a "bad" site.
CodeSandbox is an online code editor and prototyping tool that makes creating and sharing web apps faster.
Safe and trusted, BUT - They have to clean their domain from "Phishing".