Is our C3 subscription set to auto-renew? Yes. C3 subscription auto-renews on 1st of every month unless cancelled. By user|2020-06-18T19:22:15+00:00May 14th, 2020| Share This Story, Choose Your Platform! facebooktwitterlinkedin About the Author: user Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.