Just noting that you can also get the wpcf7_unit_tag_not_found error if the unit tag is not being picked up because your API call is not formatted properly.
@trulycool it is worth testing it out in Postman first to isolate the problem and confirm it’s not your code. I eventually got mine working properly using Axios.
Hey there! Mailchimp will return a 403 error if the form isn’t enabled on their end. Can you check the form’s settings in Mailchimp and confirm it’s connected?
Hi @zhannak – screenshot is here.