First, I would be certain that you are resetting the right breaker! Sometimes they mis-label electrical panels. Turn the breaker off and try the cooktop to be sure it has no power.
If that doesn't solve the problem then I would take it in for warranty repair!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD