Like Paper-boy said, you need to add your postback url in the cpa lead postback url section, but here's the rundown on what you need to do.
When you're setting up the campaign in t202, you're gonna be linking to your lp's domain, then use a subid for your postback id( just use t202's [subid] which t202 creates as a sequential click number, that should be fine for this use) on the end of your landing page link. So when creating a new campaign, the link you enter should look like yourlpdomain.com/lp1.php?postbackid=[subid] . Generate your tracking link and it should show up something like-
yourt202domain.com/track.php?subid1= which will pass the postback subid to your lp like- yourlpdomain.com/lp1.php?postbackid=[subid]
Next you need to pass the postbackid=[subid] onto your aff link in your lp, so in your lp's php file code you need to put the cpa lead aff link wherever they click to get to the offer- attach $_GET['postbackid'] in a particular subid variable of the cpa lead link. I don't use cpa lead so I have no idea what their links are like but say dacpalead.com/track.php?subid1=blah&subid2=blah2&subid3=$_GET['postbackid'] which will grab the postbackid variable off your lp link in the address bar.
Then in the cpa lead panel add your postback url -http://yourtrackingdomain.com/tracking202/static/gpb.php?amount=%subid3% where subid3 is the custom variable from cpa lead that will be the 'postbackid=[subid]' Usually affiliate networks call the subids for the postback urls with % around the subids(%subid3%).
Cliffnotes- the postback id generated from t202(click number [subid] ) gets carried along to your lp, which then gets passed to the aff network's link that gets clicked via $_GET['postbackid'] , then aff network places the id onto the postback url in the particular subid(subid3 in this example) spot and then executes it if your user converts.
