Cs-Cart Email Marketing Addon Does Not Transmit Last Name To Mailchimp

Hello,

I'm running CS-Cart 4.3.7 with activated email marketing addon.

I put the correct Mailchimp API credentials into the addon settings.

Unfortunately the addon does not transmit the last name, only the email & first name.

Any idea why that happens and how to fix it?

Thanks and with kind regards,

Philip

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