My Whirlpool wall oven has a lock display on the screen

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Brand:Whirlpool
Model Number: WOS51EC0HS20
Main Symptom:Locked screen
What happens & when: I can’t do anything to unlock. I tried turning off power to reset.

Error Code (if any): Locked screen
Parts or tests already tried: I installed a new mother board. W10440219
Photos / video link:

If Tools or the Gear button is pressed, will the display pull up an options list? If it does, select the Control Lock option. Once it is selected and entered, scroll up to unlock the control system.

Good morning, When I press the gear button it goes straight to a new screen that says this product is locked. swipe up to unlock. I tried many times to follow the prompts with no success.

It sounds like the user interface control is not accepting control lock input at all. This would normally point towards a failure in the user control panel assembly. While I do not see a main control part number W10440219, I do see the main oven control W11261167 being used with this model. If this was the main control that was already replaced, it would reinforce the user control panel assembly being the issue.

Main oven control- W11261167 Wall Oven Control Board | Genuine Whirlpool OEM In Stock

User control panel assembly- W11600370 Console Ptm Assembly (Console Control Module) | Genuine Whirlpool OEM In Stock