50 amp power to 30 amp pedestal

We have a 2013 jayco pinnacle 5th wheel and whenever we plug into a 50 amp park pedestal every thing works just fine. However whenever we go to a campground with only 30 amp power pedestal and use the "dogbone" 50 to 30 amp reducer we have no power to the microwave, water heater, fireplace, or outlets in the kitchen and bathroom. I have a short twistlock 50 to 30 amp to 15 amp that i use to plug a 110 extension cord in occasionally during storage season to charge the batteries. So this past weekend I used a 30 amp cord and plugged it into the twist lock 50 to 30 amp cord at the campground we were at and everything in the unit worked just fine. Microwave water heater outlets in kitchen and bath and fireplace. This is driving me crazy. Why won't the 50 amp power cord work with the dogbone adapter? Has anyone else had this problem? The 50 amp cord has 2 blue lights on the male end and both lights light up weather plugged into 30 or 50 amp. Thanks in advance to anyone who has any suggestions. I do not believe there is a problem with the 5th wheel as everything works just fine and never trips any breakers. We also have a 50 amp surge guard and it never gives any error code when using the dogbone adapter. Just some things in the unit don't have any power to them.