For me, when I hook up the hose- I have to flip a little lever to lock it in place and allow propane to flow. Do you have pictures of your hose ends and connector on the stove/camper?
2018 Ram 3500 DRW/crew cab/long bed/4x4/4.10 gears pulling a 2017 Spartan 1245 by Prime Time
Checkout my site for RVing tips, tricks, and info | My family and I have fulltimed since June 2015
I will try that. Mine has a little lever underneath the trailer and on side of the trailer. Maybe I didn't have it hooked up properly on the one connection under the trailer . I'll try the lever again.