Is there a way to add a redirect so when the form is finished and email is sent it redirects back to the initial form page?

>Is there a way to add a redirect so when the form is finished and email is sent it redirects back to the initial form page?

You can use this javascript to redirect users to the first page.

<script>
document.location = "./";
</script>

Put the code above on the last page (web/form/tpl.(table-name).reg_page3.inc.php)