Add
A traffic source. Its slug is used as source=<slug> in campaign tracking links.
Any {placeholder} is substituted at click time:
System: {clickid} {source} {campaign} {placement} {subid} {country}
From campaign URL: any param the visitor had — {pid} {zoneid} {sub1} etc.
Example: https://app.appsflyer.com/id123?pid={pid}&c={campaign}&af_siteid={zoneid}&clickid={clickid}
A campaign owns the traffic URL. Landings and offers are chosen here, so the network URL stays stable while creatives change.
Select the folder with your LP files (HTML + assets). Use {{offer}} in your HTML where the App Store URL goes. Reference assets with relative paths.