Contact 7 Integration not working

Hi Kevin, How are you?

I was trying to use the contact 7 integration but cant get it to work, here is my form code

[tel* Order-ID class:gift_form_field placeholder 'Amazon Order ID - E.g. "304-2598420-4785453"']
[email* your-email class:gift_form_field placeholder "Email Address"]

<h1 class="gift_form_header">Customer contact details</h1>








<div class="gift_form_newsletter_div">
  [acceptance Newsletter class:gift_form_newsletter optional] Yes, I would like to participate in gift and discount promotions. [/acceptance]
</div>

[yikes_mailchimp_checkbox]

[submit class:gift_form_submit "Submit"]

and i enabled the contact 7 integration and chooses the mailchimp list from the integration setting, And I receive the contact 7 success message but nothing sent to mailchimp.

Also im wondering if its possible to prevent the integration from updating a specific field when resubmit… i will explain..
I plan make the integration checkbox enabled by default and hide it with css so i send all contacts to mailchimp but also i plan to send the value of the Newsletter checkbox shown above to mailchimp so on mailchimp list there will be a mergetag called newsletter that determine if that contact checked that newsletter acceptance checkbox or not. but the problem here is that im worry that a user check the checkbox after submitting his details for the first time and the newsletter mergetag value become “1” or checked and later he resubmit again and the integration update the contact making the mergetag value is unchecked “blank value” so im wondering if there is a way to prevent updating that checkbox value on mailchimp or prevent updating all contact info on mailchimp if its not posible to disable it for just the checkbox.