+1 for a trip to the dealer. It sounds like maybe the torsion bar that provides the lift assistance on one of the panels is broken or otherwise messed up.
The lift assistance is supplied by metal bars that act as torsion springs. One part attaches to the roof panel and the other extends into the front or rear side of the camper.
If one breaks or is not connected correctly it will be like a garage door with a broken spring, very difficult or impossible to lift.
2011 FR Rockwood Premiere A126 Hard Side
TV=2011 Jeep Wrangler Sahara 2 Dr
Reese 66065 WDH, Curt WDH Shank #17120
Prodigy P2 Brake Controller, Mopar 7-pin Harness
B&M Transmission Cooler (#70268)