The two issues occured when the stagescape was controlled by one or two ipads, but the wi-fi stayed connected.
Did anyone already had this bad experience. The soundman is a bit less positive about the LINE6
The display was still on, but all the command where inactive. (volume, and parameters control)
I would add that this happened once whith the staescape controlling a HK system, and the second time with the stagescape linked to LINE L3t via EDU link cable.
Thank you for your help