[ad_1]
Hi,
First of all, make sure that MC4WP “knows” about the field, you do that by going to MC4WP > Mailchimp, and clicking Renew Mailchimp lists. Then click on the list name to fold it open and look for the merge tag. You can copy the merge tag from there to be sure you have the exact naming of the field correct.
Please use the exact same capital letters for the field name, if that doesn’t work, add mc4wp- in front of the field name.
https://www.mc4wp.com/kb/send-cf7-fields-mailchimp/
Hope that helps. If you have any questions, please let me know!