Hey Harshad,
I can 100% confirm my host is not using a firewall and there is nothing on the website that is blocking the AP!. I sent you logs showing that there was no response from the smushit server.
I can confirm this because I work as a Sales Engineer for Flywheel, the company that hosts this site. I can walk you thru the entire tech stack of our server setup if you like. There is no firewall or plugin blocking the API. I have tried disabling all plugins except for WP Optimize and still, there was no connection to the smushit server. Please look at the logs I sent.
