Here's another thought? Are you in temperatures below freezing right now? If so, it's possible your propane gas line could have frozen up, perhaps at the regulator. And for anyone who says gas lines don't freeze have never live in Indiana where it happens quite often at people's homes and in RV's. Almost always, the gas meter at home gets frozen. On RV's it's often the regulator.
I'm just saying. .... check it out and make sure you have gas flow. Turn on your gas stove and make sure you have a good flame. If so ... I'll then get off my soap box.