I use the same one, installed via F-Droid (on Android 12). For me it can't adjust the focus of the camera, one has to open a camera app, adjust the focus, close

I use the same one, installed via F-Droid (on Android 12). For me it can't adjust the focus of the camera, one has to open a camera app, adjust the focus, close camera, open QR app .. if you know of a fix then I'd be very happy.