Elektrolux EOB 68200X Oven Displaying 'Device Locked' Post-Power Failure

Hello,
After a power failure, the oven has entered some strange condition and displays "Device Locked". There is nothing in the manual about it, and I can't find anything on the internet either. I turned off the demo mode. The time and menu are displayed. An attempt to press the buttons results in the display of the text. I can't select any function, not even enter the settings. I reset my device, tried various random key combinations. What else can I do ... because my wife won't bake a cake for me
ST

Press this key above "OK" and the "-" key simultaneously. Hold both.

Thanks. At the same time, it worked ... you will get used to the keyboard and cannot read the instructions consistently . Topic is closed