Previously I was able to copy link/embed the reports using urls that are configured to open specific pages in the report pack using the pagename=reportsection querystring parameter
But suddenly, this stopped working and every url points back to the top page of the report pack. Help!
Based on my test, the pageName filter does work within Publish to Web URL. Please open the report in Power BI service and find the pageName value of the desired report page. After you get the URL from Publish to Web feature, you can append the &pageName=<reoprt page value> at the end of the URL. You can take a look at below sample:
Best Regards,Qiuyun Yu