Some pixel events could not be processed for audience building because you opted out of interest-based advertising from Facebook. To verify whether pixels are installed correctly, update your tracking settings.
please advise on how to fix it
thanks
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Hi @mobiteky_geek,
I believe that has to do with GDPR not with our Facebook Pixel App 
I guess Facebook wants you to agree with their Terms of Service before using those audiences, can you check under audiences tab in Facebook ads manager… perhaps some of your audiences need to be approved first…
Or can you give us the context of that error with some screenshots to understand further
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