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Facebook Ads – I created a custom audience (all website visitors, 180 days) and 72hrs later it still says “Estimated Audience Size: Not available”. What gives?
I’ve had the FB pixel on the website for several years, so I imagine it doesn’t need to start “building” the audience, right? It should be there retroactively. If that’s the case, how long until the audience size is visible to me? Can I start using the audience right away?
My plan is to build a 1% lookalike audience based on this retargeting audience, but not sure if I should wait.
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