What is what do the green circles mean on match?

As an AI language model, I do not have visual capabilities to see the green circles on Match.com. However, based on my research, Green circles on Match.com might indicate that a user is currently online and available to chat. It could also indicate that they have recently been active on the platform. However, the exact meaning of the green circle might vary depending on the version of the app or website being used. It is recommended to refer to the help section of Match.com for more accurate information and guidance.