How to activate BLE Connection?

Hello, I have a gateway model DSGW-014, according to the datasheet, this gateway has BLE capability, but there is not much information about how to use and activate it. I have an accelerometer device that can send data in .txt file format via Bluetooth. How can I establish communication between the device and the gateway via BLE?

Does this gateway have the ability to activate Bluetooth advertising, receive data via Bluetooth and send it to the server via the communication protocol ( MQTT , … )?

Please check this link - DSGW-014 BLE Setting