Error: To create your ad set, you need to enable or disable the Advantage audience feature. This can be done by setting the advantage_audience flag to either l or O within the targeting_automation field in the targeting spec.
Due to a recent update by Meta to the ad sets, older ad sets that have custom audiences configured can no longer be duplicated via the Ad Launcher in adnova because of API constraints.
This is a platform-level limitation enforced by Meta and applies to all tools that use Meta’s API.
As a workaround, please create a new ad set directly in Meta Ads Manager. All newly created ad sets in Ads Manager can be duplicated normally in the Ad Launcher in Adnova, and this should work as expected.