I need to read the HTML source of the page, I need to get access to the URL you are targeting and have the page working in browser on my local machine.
It is because the page is possibly driven by JavaScript extensively so we need to repeat try-and-error a lot with the active target web page to find out how the page acts. Without acting web page in hand, I can say nothing for sure about the page with JavaScript.
Is the URL public to the internet? If so, please share the URL to us.
If the URL is NOT public, please save the target page in a MIME HTML file and share it to us here. How to? See