Creatives shared with us by the advertiser are uploaded on the network and you can find them here:
Offers>> Live Offers>> Select an Offer
Scroll down to the Creatives Section>> You'll see all the creatives there given by the advertiser
Click Get Code for HTML code or Download the creatives.
You can also pick creatives from the advertiser's official social media pages or website.
Note: If you are using New Admin System, Visit How to Get Creatives From New Admin System?