WHMCS Payment Gateway not working

I am creating my payment gateway and I did everything that the Docs say (turned error reporting on) and there is no clue on why the error is (Payment Gateway log is empty too)

/modules/gateways/IZTPay.php

<?php

function IZTPay_config() {
   $configarray = array(
    "FriendlyName" => array("Type" => "System", "Value"=>"IZTPay"),
    "email" => array("FriendlyName" => "E-Mail:", "Type" => "text", "Size" => "50", ),
    "apikey" => array("FriendlyName" => "API Key:", "Type" => "text", "Size" => "80", ),
    "apikeypass" => array("FriendlyName" => "API Key Password:", "Type" => "text", "Size" => "80", ),
    /*"transmethod" => array("FriendlyName" => "Transaction Method", "Type" => "dropdown", "Options" => "Option1,Value2,Method3", ),
    "instructions" => array("FriendlyName" => "Payment Instructions", "Type" => "textarea", "Rows" => "5", "Description" => "Do this then do that etc...", ),
    "testmode" => array("FriendlyName" => "Test Mode", "Type" => "yesno", "Description" => "Tick this to test", ),*/
   );
return $configarray;
}

function IZTPay_link($params) {

# Gateway Specific Variables
$gatewayusername = $params['email'];
# $gatewaytestmode = $params['testmode'];

# Invoice Variables
$invoiceid = $params['invoiceid'];
$description = $params["description"];
       $amount = $params['amount']; # Format: ##.##
       $currency = $params['currency']; # Currency Code

# Client Variables
$firstname = $params['clientdetails']['firstname'];
$lastname = $params['clientdetails']['lastname'];
$email = $params['clientdetails']['email'];
$address1 = $params['clientdetails']['address1'];
$address2 = $params['clientdetails']['address2'];
$city = $params['clientdetails']['city'];
$state = $params['clientdetails']['state'];
$postcode = $params['clientdetails']['postcode'];
$country = $params['clientdetails']['country'];
$phone = $params['clientdetails']['phonenumber'];

# System Variables
$companyname = $params['companyname'];
$systemurl = $params['systemurl'];
$currency = $params['currency'];

# Enter your code submit to the gateway...

$code = '<form method="http://www.inzernettechnologies.com/IZTPay/3payment.php">
<input type="hidden" name="email" value="'.$gatewayusername.'" />
<input type="hidden" name="invoiceid" value="'.$invoiceid.'" />
<input type="hidden" name="amount" value="'.$amount.'" />
<input type="hidden" name="systemurl" value="'.$systemurl.'" />
<input type="hidden" name="company" value="'.$companyname.'" />
<input type="hidden" name="description" value="'.$description.'" />
<input type="submit" value="Pay Now" />
</form>';

return $code;
}

/*function IZTPay_refund($params) {

   # Gateway Specific Variables
$gatewayusername = $params['username'];
$gatewaytestmode = $params['testmode'];

   # Invoice Variables
$transid = $params['transid']; # Transaction ID of Original Payment
$amount = $params['amount']; # Format: ##.##
   $currency = $params['currency']; # Currency Code

   # Client Variables
$firstname = $params['clientdetails']['firstname'];
$lastname = $params['clientdetails']['lastname'];
$email = $params['clientdetails']['email'];
$address1 = $params['clientdetails']['address1'];
$address2 = $params['clientdetails']['address2'];
$city = $params['clientdetails']['city'];
$state = $params['clientdetails']['state'];
$postcode = $params['clientdetails']['postcode'];
$country = $params['clientdetails']['country'];
$phone = $params['clientdetails']['phonenumber'];

# Card Details
$cardtype = $params['cardtype'];
$cardnumber = $params['cardnum'];
$cardexpiry = $params['cardexp']; # Format: MMYY
$cardstart = $params['cardstart']; # Format: MMYY
$cardissuenum = $params['cardissuenum'];

# Perform Refund Here & Generate $results Array, eg:
$results = array();
$results["status"] = "success";
   $results["transid"] = "12345";

# Return Results
if ($results["status"]=="success") {
	return array("status"=>"success","transid"=>$results["transid"],"rawdata"=>$results);
} elseif ($gatewayresult=="declined") {
       return array("status"=>"declined","rawdata"=>$results);
   } else {
	return array("status"=>"error","rawdata"=>$results);
}

}*/

?>

/modules/gateways/callback/IZTPay.php

<?php

# Required File Includes
include("../../../dbconnect.php");
include("../../../includes/functions.php");
include("../../../includes/gatewayfunctions.php");
include("../../../includes/invoicefunctions.php");

$gatewaymodule = "IZTPay"; # Enter your gateway module name here replacing template

$GATEWAY = getGatewayVariables($gatewaymodule);
if (!$GATEWAY["type"]) die("Module Not Activated"); # Checks gateway module is active before accepting callback

# Get Returned Variables - Adjust for Post Variable Names from your Gateway's Documentation
$status = $_POST["x_response_code"];
$invoiceid = $_POST["x_invoice_num"];
$transid = $_POST["x_trans_id"];
$amount = $_POST["x_amount"];
$fee = $_POST["x_fee"];

$invoiceid = checkCbInvoiceID($invoiceid,$GATEWAY["name"]); # Checks invoice ID is a valid invoice number or ends processing

checkCbTransID($transid); # Checks transaction number isn't already in the database and ends processing if it does

if ($status=="1") {
   # Successful
   addInvoicePayment($invoiceid,$transid,$amount,$fee,$gatewaymodule); # Apply Payment to Invoice: invoiceid, transactionid, amount paid, fees, modulename
logTransaction($GATEWAY["name"],$_POST,"Successful"); # Save to Gateway Log: name, data array, status
} else {
# Unsuccessful
   logTransaction($GATEWAY["name"],$_POST,"Unsuccessful"); # Save to Gateway Log: name, data array, status
}

?>

When I pay with the module it says "An Error Occurred. Please Try Again." with no debug information or anything, I have PHP logging enabled and it still doesn't work, maybe it is my PHP code? it should redirect to the 3payment.php and then when they logged in etc I would post it back to the callback URL.

Edit: I figured out that <form> dosen't work, any ideas why?

On a first glance...

<form method="http://www.inzernettechnologies.com/IZTPay/3payment.php">

should be

<form action="http://www.inzernettechnologies.com/IZTPay/3payment.php">