this is the Baud rate testing setup, please check:
This is a screenshot of the expected info:
Searching ............
ERROR: Bluetooth Module not responding!
Make sure there are no active bluetooth connection and try again
For checking/setting Baud rate, the BT card should not be connected (Bluetooth connected) to the tablet/Android device,
To enter AT command mode, the BT card LED should blink
Just in case, try inverting D2 and D3 cables
Have you already successfully used this board for other projects ??
Please let me have a link to the specific BT board you purchased