Hello,
The Code you are using for the Form is incorrect! Consider using the following code replacing the old one:
<div class="form-widget">
<div class="form-result"></div>
<form class="mb-0" id="template-contactform-popup" name="template-contactform-popup" action="include/form2.php" method="post">
<div class="form-process">
<div class="css3-spinner">
<div class="css3-spinner-scaler"></div>
</div>
</div>
<div class="col-12 form-group">
<label for="template-contactform-popup-name">Name <small>*</small></label>
<input type="text" id="template-contactform-popup-name" name="template-contactform-popup-name" value="" class="sm-form-control required" />
</div>
<div class="col-12 form-group">
<div class="row">
<div class="col-6">
<label for="template-contactform-popup-email">Email <small>*</small></label>
<input type="email" id="template-contactform-popup-email" name="template-contactform-popup-email" value="" class="email sm-form-control" />
</div>
<div class="col-6">
<label for="template-contactform-popup-phone">Phone</label>
<input type="text" id="template-contactform-popup-phone" name="template-contactform-popup-phone" value="" class="required sm-form-control" />
</div>
</div></div>
<div class="col-6 form-group d-none">
<!-- subject -->
<input type="text" id="template-contactform-popup-subject" name="subject" value="Contact form enquiry" class="required sm-form-control" />
</div>
<div class="col-12 form-group">
<label for="template-contactform-popup-message">Message <small>*</small></label>
<textarea class="sm-form-control" id="template-contactform-popup-message" name="template-contactform-popup-message" rows="2" cols="30"></textarea>
</div>
<div class="col-12 form-group d-none">
<input type="text" id="template-contactform-popup-botcheck" name="template-contactform-popup-botcheck" value="" class="sm-form-control" />
</div>
<div class="col-12 form-group">
<button type="submit" class="button button-rounded button-small button-dark m-0" id="template-contactform-popup-submit" name="template-contactform-popup-submit" value="submit">Send Message</button>
</div>
<input type="hidden" name="prefix" value="template-contactform-popup-">
<!-- E end -->
</form>
</div>
This should definitely fix the issue. Hope this Helps!
Please consider checking out the Form Documentation and this should definitely help in fixing minor customization issues with the Form: http://docs.semicolonweb.com/docs/forms/form-setup/ .
Let us know if we can help you with anything else or if you find any further issues.