HDR Not Available in Lightroom Mobile (Samsung S25 Ultra)

I’m using a Samsung S25 Ultra with the latest version of Lightroom Mobile (version 11.2.3) on Android 16. I’ve ensured that no power-saving mode is enabled, and both auto-brightness and extra brightness are turned off. However, when I try to enable the HDR option in the histogram within Lightroom, it shows “HDR unavailable.” I’ve also restarted my device, but the issue still persists.