Hi everyone ! I try a lot of things but … I do not find any solution.
I need to check if a group is existing in mailerlite, if not I create it and if yes I add a user one it.
Sound very simple !
But After create the group, i can’t add the subscriber on it I have the error on the screenshot. I use CUSTOM value to match with the ID created just on the step before.
I get the data from Learnworlds, I want to create a group for each courses of learnworlds
