Recommendations for accessing a locally hosted webpage limited to a specific browser version, as dashboard testing can't access it?

My web project is limited to a certain version of the browser to be able to access it. Realtime testing in dashboard could not access my local hosted webpage. Do you have any recommendations?

Hello Toby-steed,

In that case, you can install Underpass tunnel first (for local testing) then launch a test in realtime browser testing: