There are several issues with them, they had me replace heating element, that wasn’t it. Took it apart and found in upper right corner a heat sensor for over heat. It has burned up. They don’t sell that little part. Went to appliance part store and got one for dryer and replaced connectors. Very poor wiring set up. Lots of the new ones have problems with controller. On yours first thing to check is pull cover on back lower left that covers where heating element is connected. Most when they quit the spade connectors that hook onto heating element burn up from over heating because they get loose. If so you can clip them off and get a couple of new ones for stoves and crimp them on and your set. I’m on a couple of masterbuilt pages on Facebook. Seems their service really sucks anymore.
Proud Member of Team Geezer
Charlie Weaver USN/ENC 1965-1979