Problem with Bluetooth microbit

I have a problem using the microbit_led example of IoT App Inventor for BBC Micro:Bit platform. I have tried the example code and i obtain the following error:
"Service e95dd91d-251d-470a-a062-fa1922dfa9a8, characteristic e95d7b77-251d-470a-a062-fa1922dfa9a8 are not published by the connected device". I have been investigating about that but i can find the solution. My microbit is V2.


Have you made any progress to a solution ?

I have achieved to display a figure in microbit display using the block writeledmatrixdisplay but i have to reproduce the steps i did to achieve it. Do you have the same problem with BLE?