In some cases, you might be impacted by an error saying that you must accept the Custom Audiences Terms of Service (ToS) to be able to proceed.

This is due to a Facebook restriction made to enforce their system.
Here are the steps to follow to fix the issue:

Visit https://www.facebook.com/ads/manage/customaudiences/tos.php to validate your acceptation of the rules.

Visit https://business.facebook.com/ads/manage/customaudiences/tos.php?business_id={BUSINESS_ID} to validate your acceptation of the rules at the business level. 

Note that you need to replace {BUSINESS_ID} per your own.

For each ad account you might need to use, you'll have to make sure that their ToS are also accepted. To do so, use the following URL by replacing {ACCOUNT_ID} with your ad account IDs (act_xxxx format): https://www.facebook.com/ads/manage/customaudiences/tos?{ACCOUNT_ID}.

To apply those changes to Paragone, you'll need to refresh your access token provided to our platform. Simply disconnect and reconnect using the Facebook Connect pop-up to reset your access token and apply the modifications on our side.