I have called them I don’t remember the number but google thor service tech, for me in Ohio the closest one was Elkhart Indiana but he was good enough to help me solve a propane leak over the phone, and our local propane service fixed it and didn’t charge use anything.
The fill valve on the tank was leaking and of course the tank was full, he loosened the fitting and used a thread sealant and tightened it back up, fella had to have brass balls