Unfortunately, this will not work. We use the HTTP Authentication mechanism provided by Java to provide security to the pages. Pages are set behind context objects from within the HTTP(S) server objects provided by Java. In non-technical terms, everything is handled from within the lightweight webserver.
We do not support any other browser than Chrome; although we try to support Edge, Firefox, and Safari as best as we can.
The one thing you could try is changing your URL that you use to connect:
That sends over the authentication information automatically and doesn’t require the pop-up.