Contact Forms will Not Validate "Configuration Errors Found"

When I try to program Contact Form 7 (in the “mail” tab) to send an email to:

[infusionsoft-email]

then I get the error message “Configuration Errors Found” … and specifically under the “To” field of the mail tab it says “This field has syntax errors.”

But the form still works.

Any ideas on how to do this differently so that my forms will pass Contact Form 7 Validation? Just checking, thanks!

https://wordpress.org/plugins/contact-form-7-infusionsoft-add-on/