Hi @Bossman,
Usually blue and yellow lights turned on indicate that 8-hour sleep mode is activated. To exit this mode, press and hold the Cycle button until the yellow light turns off, or, if only the blue light is on (you are not within the 8-hour sleep period), the yellow light will flash to indicate you have exited this mode.
Also, if the robot is stuck in certain position, please perform Hard Reset: Litter-Robot III Open Air - Hard Reset