Frozen R Pod

Yikes, and it doesn't look like its going to warm up much anytime soon where you are. Hopefully leaving the furnace on for awhile has helped. Maybe take a heat gun on low or a hair dryer and try to warm up the plumbing lines where you suspect them to be frozen? You could also try connecting your water supply line to a hot water source and seeing if that helps get things thawed out. 

Good.  Once you get them working inspect carefully for leaks, especially at all the fittings and fixtures. Do the same in the spring when you de-winterize. You don't want water damage in an rPod, that can destroy a trailer very quickly.