Hi everyboday. Error 515 Bluetooth device not connected!

I have done app the steps to create the app as in the link Below.
But the error that I receiver is 515 Not connected to Bluetooth device.

Is Something wrong here pt with the settings?

Can someone please give me an idea?

Thank you!


Export your .aia file and upload it here.

Thank you very much for your answer.
I swiched two blocks and this was the issue.

Thank you! I appreciate!

can you say more?
also a screenshot of your relevant blocks could help others with similar issues in future