As many people are looking to use their affiliate link, here is the guideline for this:
How to create a Campaign:
As the Figure 1.1 shows where you can upload your affiliate link.
2) Payment Page:
As Figure 1.2 shows, you should fill out the form and proceed to
3) Creative Detail:
You would need to choose ‘Offer-Wall’ as the ad type and as the Figure 1.3 shows, where it says website URL,
you can input their affiliate link: