Hello MarcT88,
Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.
Based on your most recent reply in this thread, it sounds like the Gravity Forms plugin is now connecting properly for you after the developer released their most recent update.
Please feel free to post here or reach out to us directly at webservices@constantcontact.com if you continue to experience any issues or have any additional questions.
Regards,
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