I want to echo similar complaints found here (https://community.adobe.com/t5/adobe-acrobat-online-discussions/bug-report-acrobat-chrome-extension-does-not-respect-page-specific-pdf-links/td-p/13223193) and here (https://community.adobe.com/t5/acrobat-discussions/adobe-acrobat-extension-blocks-navigation-to-the-pages-indicated-in-the-pdf-url/td-p/14049758)

I have a website with links that reference specific sections of a PDF user guide and when the extension is disabled it works just fine by jumping users down to a specific page of the PDF by appending #page=XX to the end of the URL. But with the adobe acrobat extension enabled it no longer does this.

So, 1. your documentation is out-of-date and incorrect (here: https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acrobat.html)

so either fix that, or, more helpfully:

update the browser extension such that it honors the #page= requests on URLs.

Very frustrating that it no longer works as I have a lot of functionality riding on that and will cause a considerable time and expense trying to find some other way to present that information simply because that feature does not exist in your very own browser extension.