Stage display opens when starting presenter

This just started happening a few days ago. When I start presenter a big window opens for the the stage display.
I can close it but figure I did something in settings to cause this.

Any ideas how to fix?

Thanks

When Presenter opens with a large Stage Display window, it usually means Windows is set to duplicate your screens instead of extending them, and because Presenter needs Extended Desktop mode to place Stage Display on a separate output, you’ll need to switch modes by going to Start → Settings → System → Display (or right‑clicking the desktop and choosing Display Settings), finding the Multiple displays dropdown, and setting it to Extend these displays.

If the Multiple displays option isn’t visible, Windows may not be detecting your second screen, so confirm the display is powered on, connected to the correct port, and set to the right input, and try clicking Detect in Display Settings. Once Windows is extending your displays, Presenter will stop opening the Stage Display window on top of your main screen.