Im running facebook ads and today i woke up to see my server cpu at 100%. I couldnt even use my website.

I did some research and found out it was a Facebook Crawler sending excessive requests. I tried looking for a solution and found this: .html

Problem is that when i implement the code into the funtions.php file of theme it results in my website only displaying this: "Click to see Picture"

Could you please let me know how i can fix this? I cant really block the facebook crawler since i only get traffic from fb ads.

Thank you for your time and your help is much appreciated <3