Gmail api Pub/sub webhook not working

Hello, I am Rogerio, I'm a Senior Web Developer and Web Designer with 7 years of experience and would love to discuss this in more detail with you. Instead of wasting your time, as well as my own with a long wall of text that nobody wants to read, I'd like to invite you to a conversation where we can properly discuss your requirements. I am absolutely certain that a no strings attached kind of discussion with me would be quite enlightening towards guiding you to the proper solution for your website. I'll be waiting for your reply Rogério Dalot