Mautic Dynamic Content Not Working

Your software
My Mautic version is:2.16.2
My PHP version is:7.2.17

Your problem
My problem is: I am having an hard time to make the dynamic web content working on my WP website. I have tried both campaign based and non campaign based DWC, but it seems the campaign push request is not working. The only thing I am able to see in the website is the default DWC text.
On inspecting the XHR request i am seeing a 204 no content status code from the Mautic server. Somebody please help me to fix the issue.

P.S :we have CORS enabled for both Mautic and WordPress
These errors are showing in the log: No errors in the log