How to connect the bluetooth of D11 label maker?

Step 1: Long press the machine to turn it on, and the indicator light will turn blue and you will hear a beep.
Step 2: Turn on the Bluetooth connection.
Step 3: Start the APP, Click the "unconnected" button on the upper right corner, the APP will search for the printer automatically.
After the connection is successful, the printer will beep and the APP will show "Connected successfully". You can also find that the printer icon in the upper right corner of the homepage shows "D11".