Hi, i'm totally baffled and overwhelmed with convert kit and teachable. Im trying to set up a rule in convert kit where a user will "buy" a free challenge on Teachable and it will then start an email sequence in convert kit along with my deadline funnel. When I go to create the rule in CK, it only lets me select two of my paid products to set up the rule, and doesn't give me the option to select the free challenge. Do you have any suggestions? I really appreciate the help.