aha Yes I see what’s the issue.
I set a field as a dropdown in Quform and in the audience it was set as radio buttons. It works fine after changing it to dropdown field in Mailchimp.
It would be a very nice feature if Quform would show this during creating the integration. Maybe a sort of test button with some feedback? Don’t know if something like this would be possible, but it would’ve helped me 
Thanks for help again!
Kind regards,
Emile