People in forums write GL and RL. What are those?
Posted rule
Neither appears anywhere in Whalebuy's published help centre. They are community shorthand that grew up around shared product lists: a green light meaning a listing somebody has ordered from successfully, and a red light meaning one to avoid.
Not a company term; recorded here because readers arrive asking about it.
In practice
Treat both as hearsay with no standing on the service. A warehouse photograph of your own goods is evidence; a colour code somebody gave a listing is an opinion.
Misread as
The codes get read as a verification scheme. Nobody runs them, nobody audits them, and the listing behind one can change seller or specification overnight.