Everything worked fine then…
Tried sampling just as the usual : the volume input was at max, but almost no sound could be heard.
Then actually the whole project didnt work (almost no sound or very low)
Turned off and on again a few times, then sound when sampling could be heard again and a few more run/stop later my whole pattern re-appeared.
Obviously a bug. And its my second day using this intensively… shall i expect a lot more « issues » like that again?
Very happy about the sound and pretty good functions though.