With these steps you will be able to integrate our system with vBulletin PayPal subscription.

1.

Login

Log in to your vBulletin admin panel and go to: Styles & Templates > Style Manager. In this section choose your used style and from the select box click to the Edit templates

2.

Select the proper template

From the showed templates select: Subscriptions (Paind) Templates and after that subscription_payment_paypal

3.

Find these lines

In the showed code find these lines:

<input type="hidden" name="notify_url" value="$vboptions[bburl]/payment_gateway.php?method=paypal" /> 
<input type="hidden" name="custom" value="$userinfo[username]" />

4.

Use this code

After above lines add this code:

<input type="hidden" name="notify_url" value="http://URL_TO_PostAffiliatePro/plugins/PayPal/paypal.php">
<input type="hidden" name="custom" value="" id="pap_dx8vc2s5">
<script id="pap_x2s6df8d" src="http://URL_TO_PostAffiliatePro/scripts/notifysale.php" type="text/javascript">
</script>

Note: If you using multiple styles, these changes has to be done in each of them!