Hello @omarehab,
Thanks for reporting this, and sorry for the trouble!
I suspect the error you mentioned is related to the fact that Jetpack isn’t well connected to your site at all. We want to fix that and see that the errors found via the query monitor plugin disappear.
I see a block happening at your server’s end that’s preventing Jetpack to connect to your site as expected. Can you reach out to your host and ask them if they have any blocks or limits on your XML-RPC.php file??
It’s also worth checking whether any Jetpack IP addresses are blocked. The full IP range can be found at the bottom of this page:
https://jetpack.com/support/hosting-faq/
Also, check for any security/caching plugin you may have enabled, and try temporarily disable them, to see if it fixes the problem. You may also want to search for any firewall on your server-side that might be blocking the communication with the xmlrpc.php file – your host should be able to help you with that.
Let me know what you find out, and we’ll take it from there if necessary.