Hi jay dee,
Since Windows Protected Print Mode shows Set up, it appears to be disabled. As the printer works but the scanner is missing, please check whether Windows can rediscover the scanner:
- Go to Settings > Bluetooth & devices > Printers & scanners.
- Select Add device next to Add a printer or scanner.
- If your multifunction printer is already listed, select it and check whether Scanner settings appears.
If it remains missing, check the manufacturer's website for updated scanning software or a scanner driver for your exact model and Windows version.
I hope this points you toward restoring the scanning function while keeping your existing device.