Hey, not in radio listening sites but in other sites - I've had to disable AG and then exit AG for it allowing of the site to work. Don't know if you've tried this or it would help in this case , or even the difference between just disabling AG and then on top a total exiting of it - to make a site then work.
Maybe try another browser like one with a portable version - then try your site. Just thinking out loudOkay now i uninstall ADguard (and my Internet Security Software) and the problem also happens! so sorry for the circumstances, i ask now in the Microsoft Edge-Forum!