Show FormCraft form on page open [closed]

From the documentation, you have to use the shortcode:

[fc id='12' type="popup"][/fc]

Next, something has to trigger the form, you can create a button for that and then click it from jQury, edit the link which would trigger this form, and put the href or hyperlink to:

<a class="triggerForm" href="http://yoursite.com/form-view/12">Link Trigger</a>

jQuery trigger.

$(document).ready(function () {
 $('a.triggerForm').click();
});