Bluetooth LE E104-BT40 no connect

I USE THE STANDARD LIBRARY bluetoothLE
NO CONNECTION TO EBYTE E104-BT40 MODULE
OTHER LE MODULES CONNECT WITHOUT PROBLEMS TYPE JDY-33 HM-10,
HOW IS THIS E104-BT40 MODULE DIFFERENT FROM OTHERS?
WHEN YOU ATTEMPT TO CONNECT, THE CONNECTION WILL NOT OCCUR AND ACCORDINGLY THE LED INDICATES IT

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