Is there a way to initialize the mobile app with room and user name, when conecting to your public server?

Dear Jitsy Team,

I wonder, if there is a way to initialize the mobile app with room and user name, when started through the iFrame APIs App Promo Page, and using your public server.

I am about to integrate Jitsi into a private web site, based on your public jitsi server. The website uses the iframe API. Room and user names are specified in the options.

This works like a charm on desktop computers. But there is an issue on mobile devices: the room and user name are not there when users decide to start the mobile app. Unfortunately this is unhandy, since the room name is generated.

Disabling the app promo page is not an option, since access to camera and microphone is denied for the web-version on many devices,

I tried it with JWT, but of course, since my website doesn’t know your secret for the signing, it failed.

Is there a way out of this dilemma without running an own Jitsi server?