Win10 Login Screen - Can't Personalize

I am running Win10 22H2 x64 on a desktop computer. I have a picture I would like to use in all background, login, and lock screen settings. I have been partly successful. That picture does now appear on the desktop; also on the lock screen after I hit Win-L.

Unfortunately, I have not been able to make that picture appear on the login screen. In other words, I still have the default Windows picture when I first boot up the system. How can I make my preferred picture appear there?

To repeat, my picture does appear when I go into Settings > Personalization > Lock Screen. At that location, I have turned on the option to "Show lock screen background picture on the sign-in screen." But my picture still does not replace the default Windows picture when I first start the computer.

It was on, as already indicated. I turned it off, turned it back on, and rebooted. No effect. But thanks for trying.