If you only want your ads featured on only Facebook or Instagram, you can get in touch with our support team, and we’ll make the necessary adjustments to your ad campaign.
However, we don’t generally recommend doing this; having your ads featured on only one social media network will severely limit your reach. The goal with retargeting campaigns is to be everywhere your customers are. Sometimes they are on Facebook and sometimes they are on Instagram. Why not be everywhere they are?
To better understand why it's recommended to run ads on both Instagram and Facebook, check out this article on how retargeting works.