If there was water in your tank the only way to get it out would be remove the valve and drain it.
Propane comes out of the tank as a vapor, of the top of the tank.
The first thing I would suspect would be a weak pilot and being blown out by the wind. Look at the size and color of the flame. It should be blue not yellow.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles