Found the solution thanks to this answer to another post that I had missed:
It is required to long press on button 2 and 4 (top right and bottom right) for a few seconds until button 3 led is blinking. Then button’s actions are working fine.
Found the solution thanks to this answer to another post that I had missed:
It is required to long press on button 2 and 4 (top right and bottom right) for a few seconds until button 3 led is blinking. Then button’s actions are working fine.