The first photo is the screenshot with the bike on, after a while the lambda values do not change.
I contacted Christian Giupponi, creator of the App that helped me step by step, making tests.
For now it seems that the problem is more serious than expected and that it depends on the latest updates of Android that do not allow to work together both data acquisition from USB and via bluetooth.
He gave me a modified version, but he has already announced that it may not work for the reason given above.
I could not try the new version, I am at sea with family this weekend, even Christian is not there so we will talk about it on Monday
...il suono del Desmo è quello che va in risonanza col cuore.... F. Taglioni