Please note in the upper left corner of the LCD.
If you do not see anything here, wireless communication function is not running. If this is the case, please enable the following procedure.

The intelligent block has a button like this "< >" ← referred to as "NXT" button. It will be referred to as "left button" "input button " "right button" respectively, I want to select the menu called, "Bluetooth" by using this button. This is where I make the settings for wireless communication. When you figure the part of the "Bluetooth" menu, this happens. Here,,,

"ON / OFF"(Input button) → "ON"
"Visiblity" (Input button) → "Visible"

Please set this way.

If successful, you will see something as shown in the above.
If this displays such as from the original, the operation is not required.