If you have created a pixel-based campaign and you are not able to record the conversions then these are the steps you need to follow to find out the issue-
Step 1- You need to check if the advertiser has placed the pixel correctly on the landing pages. To check this you need to follow these steps-
1- Go to the "Postback Hits Received" option in the Advertiser tab.
2- Select the "Campaign" and "Advertiser"
Here you can enter the details and can see if there are any errors or not.
To check the possible list of errors please Click Here
Step 2- Check if the advertiser has placed the pixel properly or not. To do this please follow these steps-
1- Generate a tracking link( Make sure it's in the same domain of the iframe/Image Pixel)
2- Go to Incognito mode of the browser and allow third-party cookies to do the test.
3- Paste the tracking like in the browser.
4- Once the link opens, "Right Click" on the page and open the "Inspect" option
5- Select "Network" in the "Inspect" menu and check the "Preserve Log" option.
6- Fill the test lead on the page and submit.
7- Once you have completed the process, search for your domain in the "Inspect' Menu and look for your pixel