What can be done ?
During some combinations of adjustments, it is possible that the warping get stuck. Than it is possible to reset the board and restart from a clean adjustment.
During some combinations of adjustments, it is possible that the warping get stuck. Than it is possible to reset the board and restart from a clean adjustment.
Use the arrow keys to select the Reset icon on the general icon bar at the bottom of the window.

The hardware will restart. It can take a while until the warp unit is available again.