I have a website that I have to move it's nameservers to cloudflare for some optimizations. All went well. Except for this one weird issue, when I press submit on a form it opens a new tab with the URL of https://my-website/mail.php instead of sending the the form in the background.
I do not have much experience with PHP, what might be wrong here?
my form's opening tag is as follows:
<form id="contact-form" method="post" enctype="multipart/form-data" action="mail.php" target="hidden_iframe" >