Sticker on trailer
There should be a sticker somewhere on the trailer that states either the unloaded vehicle weight (UVW), the dry weight and the gross vehicle weight (estimate of what it would weight with all of your gear). Check the around the entry door of the camper and other outside areas. If not there, check inside the kitchen cabinets. Sometimes it is there. I am finding the same issue with a 2013 model trailer. Cruiser website put dry weight at 4,200 lbs. while the sticker on the trailer put the dry weight at 4,500. Probably safest to estimate on the heavy side.
2013 FF 214WSD
2011 Jeep Grand Cherokee-5.7L V8 HEMI
Equal-i-zer 10K wt./sway hitch