krpano is not displayed on smartphones, everything works on the desktop

I have been integrating a panorama with krpano for many years. It is still displayed correctly on the desktop. However, the panorama does not appear on the smartphone. I also see in debugging with the Firefox browser that when switching to the smartphone view, the integration code ‘<div id=’krpanoSWFObject‘ ...’ does not appear in the HTML at all.

Can anyone give me a tip? Unfortunately, I don't know enough about Javascript to debug the cause myself.

Here is the page with the panorama in question:
360 Grad Tour durch das Ferienhaus Schwarzwald Imbirkenweg - Ferienhaus Im Birkenweg

The whole thing is more than 10 years old. I don't really want to ‘touch’ it and I don't dare to update the script out of the blue if I don't know what the cause is.

Danke, das hat mir einen Schritt weiter geholfen.

Quote from klaus.krpano

• In the html file, remove the html5:"always+css3d" embedding setting - that would force CSS3D usage over WebGL, but that's not useful for browser compatibility.

That was from this morning's testing. I understand, this can actually all be removed and thus set to default.

If I call up an old HTML page that displays the pano without an HTML page around it, it also works on the smartphone: https://schwarzwald-ferienhaus-imbirkenweg.de/files/pano-lin…wohnzimmer.html

I therefore assume that over time some compatibility desktop <-> smartphone has been lost in the old 1.13 script?

If I take the krpano.js from the current version, it is also displayed again on the smartphone as a demo. But then there are new errors because includes etc. from the new version are probably missing.

This means I can't avoid a complete update. When I see that some things were still made with Dreamweaver at the time, it gives me the creeps.

and I have just realised that it is apparently only due to the user agent. If I remove/change the "Android" string in the debugger, everything is displayed correctly.