Cloudflare blocking api's?

as of yesterday, our website was running slow and it turns out it was facebook api, and several other api’s running really slowly. We removed them, and the site works fine. Is it possible cloudflare is blocking them?

here is one example of our facebook pixel custom api:

https://graph.facebook.com/v17.0/228508955480122/events?access_token=EAANNLsdRDQ4BAEi3mqtO995EyMpkIMqDqJhsQSbhpXOcwdc1F0jPEeMlWt8TY2M9TAb5YnzTWZARYRN8kVMxhte8TpwBZCN1rncH1E0Ylb2QW9Q1nrquFQbCmiMQ7K0pV1yRxUuAJdK5IIWxyXY1BZA8ZAm7o45xnMrf7FwePPDLyiXOhXSG

type or paste code here

can someone help please?

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