Problem with Conversion API of Facebook Ads on Wordpress with Cloudflare and APO

Hello, I’m noob, please help me. I would like to know if Cloudflare is able to disable the functions of the Wordpress API.

Because I configured the Official Wordpress plugin for Facebook Pixel and CAPI (Conversion API).

So, the Pixel working well, but the conversion API is not working.

I read on some forum on google that this problem may be on my side of the server and wordpress.

My server support said that this problem is not on the server, but maybe it be caused by Cloudflare. Somebody could help me?

My website use Cloudflre FREE + APO (paid)