I got the error says " All domains need to be associated with a pixel event pair and an ad. Your pixel event was not associated with any domains. Ads without domains will be paused unless you either set up your domain in Events Manager, select another pixel event or change your optimization.

This is something all advertisers need to do in Facebook due to the iOS 14 update. You need to go to business settings - brand safety and verify your domain. Then go to events and add events to the domain. Facebook have a guide here: https://www.facebook.com/business/help/126789292407737?id=428636648170202.

Go to Events Manager.

Click the pixel you want to use.

Under Aggregated Event Measurement, select Edit Events.

Read through the introduction screens and click Next.

Find the domain you want to configure events for.

Click Edit Events.

Select your pixel or custom conversion under Pixel / Custom Conversion.

Choose the event you want to configure under Event Name.

This pixel is not pair with a catalog error
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