The error is because you're trying to send data from a secure page (https) to an unsecure page (http). This could be fixed by two ways:
You should not use https on your registration page - that is your registration page should be "https://freehostingplatform.ml/signup.php" and not "https://freehostingplatform.ml/signup.php"
Or alternatively you can submit the form to "https://ifastnet.com/register.php" instead of submitting it to "https://order.freehostingplatform.ml/register2.php"
Hope this helps
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