January 31, 2018 (1/31/18) - Facebook custom audiences created using your customer file (or customer list) is showing "Not Available" for many ad managers and could also be affecting ad performance.
My current ad campaign was running at its lower-than-usual performance levels and we were not seeing results.
The below picture was taken after the campaign had been running for 6 Days.
I sent a support request to Facebook and received the following reply:
Thank you for contacting Facebook Ad Support. My name is Collin and I'd be happy to answer this inquiry!
As noted in our advertising principles, we're constantly looking to improve the quality and security of our advertising platforms. After identifying a technical issue with reach estimation for Custom Audiences that could potentially allow misuse of the functionality, we're temporarily removing the ability to see audience sizes or potential reach estimates for newly created or edited Custom Audiences in Ads Manager and Power Editor, followed by the Ads API by December 22.
Specifically, we are removing reach estimates for:
Custom Audiences from a customer file
Offline conversions Custom Audiences
Website and mobile app Custom Audiences if using advanced matching via the API
Website or mobile app Custom Audiences that do not include customer data and engagement Custom Audiences are unaffected by this update.
Please note that you will still be able to create Custom Audiences, as well as ads using any type of Custom Audiences, on our platform. Ads delivery and reporting will remain unaffected by this change.
We understand this solution may affect your campaign planning. To minimize disruption, we are currently investigating solutions to restore these reach estimates in our interfaces.
I have since replied to him and let him know that this change was affecting our campaign and I'll let you know if we receive any word back about this through an UPDATE to this article.
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