Help! Propane not working, on 6-week trip
I had a similar issue and it turned out to be the pigtail between the tank and the regulator. However odd that you would have the problem with both tanks. I would close both tanks, remove the connector, then reinstall, then SLOWLY open the valve. Make sure you open the tank valve slowly so that you don't accidentally activate the leak failsafe.
2013 Jayco JayFlight 26RKS
2013 Ford F150 Ecoboost FX4
2003 Coleman Bayside / 2011 Jayco Jayfeather X20E -- RIP
2012 Tacoma Sport DCSB / 2013 Tundra SR5 - RIP