It is the fore and aft level that is the critical issue with absorption type refrigerators. The coils in the back that actually do the cooling at gently sloped so being off level prevents gravity from taking its course and the cooling mixture cannot flow, hence, no cooling. If left this way for even a week permanent damage can occur when a buildup inside the tubing prevents flow of the coolant. The cooling unit of the refrigerator cannot be serviced (even at the dealership), only replaced.
Please INSURE it is working to your satisfaction before accepting it back. But also understand that these systems are very slow to cool so tell the dealership to have it working on propane or electricity for 2 days before you go to check it. That will give it time to cool down and should freeze ice in the freezer compartment.
2013 Wildcat Sterling 32RL
2008 Chevy Silverado 2500HD LT Diesel
2001 Cougar 281 EFS (sold)
1973 Layton 23' (sold)