I have two facebook accounts and run the same offer at the same time, and use the two cpvlab to track, I don't know how to set the postback for the two accounts, because there is one input box, anyone help me?
The simplest way to do this would probably be to run a single instance of CPVLab and run the traffic from both accounts to it. Can you do that?
If not, most affiliate network backends will let you run multiple postbacks: try setting the postbacks up on your network
You could create a simple php file where you put both of your postback URLs in like this:
<?php
include('http://trackingdomain1.com/adclick.php?subid=' . $_GET['subid']);
include('http://trackingdomain2.com/adclick.php?subid=' . $_GET['subid']);
?>
there is a spot in cpv lab campaigns to fire additional postpacks