I was thinking I saw a valve on mine, it is a pressure regulator under the stovetop where the copper gas line attaches.
All I can think of is the regulator is bad since you said other devices are working on propane
TT 2021 Grand Design 2800BH
Prior TT 2017 Flagstaff 831CLBSS Classic Ultra lite - SOLD 5/21
TV 2017 F150 6.5' bed 3.5 Eco-boost
prior TV 2014 Silverado 2500 HD