I had this "Level failed! No more possible switches" on start board L12762. This type of start board level failed also happened on some lower levels before I joined this community. This is system generating failure but player is penalized with loss of 1 life, selected start board boosters n all awarded boosters from preceding win levels for this level gameplay. The system analytics should be able to detect "No more possible switches" and display a "replay" button instead of "Level failed". Losing game life and hard-earned boosters are not acceptable!.
King, fix the bugs!