The app may display this message if the doll part is not installed completely.Make sure that the doll part is installed per the instructions, and that the carriage slide is lined up with the doll part icon.
Turn Monster Maker off using the power switch, then turn it back on.
If the blue light is glowing steady blue and you can’t connect to your tablet device, turn off Bluetooth on any nearby tablet device that has been paired to the Monster Maker.
Please see pages 6 and 7 in the instruction manual for detailed instructions.