Sorry you are having problems. Sounds like you have been busy on other issues, so may not have had a chance to have your heating system looked over.
-Suspect your coach should have heated tile floors (Our 04 Allure does, and the Affinity is three levels above it
!). I would have that cranked up to say 90, maybe even 95. Getting the floor heated up, provides a great heat sink mass to work off of. And feels pretty dang good on bare, or socked feet!
-As mentioned, do check each of your registries. Turn on all zones, and crank up the thermostat to kick all zones off and running. Maybe set them all to 95 for this. Then go check each of the registers (Where the heat comes into the coach.) for positive hot air flow.
>These are mini radiators, and the AquaHot zones these off and pumps/circulates hot fluid to these mini radiator/heat exchangers.
-A circulation pump could be out
-A hose could be kinked, restricting flow of hot fluid
-A fan could be out at the heat registry
-A fuse could be out to some the heat registry zones
-The radiator part of the heat exchanger, could be clogged
(Without regular usage, these have been know to clog. So at least four
times a year, be sure to exercise all of of the heating zones.)
In the meantime, the Affinity is well insulated. So get a few portable heaters, and put them on different outlet circuits to not overload a breaker. You also have heat pumps, which at some temperatures could assist you too.
Please come back and tell us what you find was the root cause
! And best of luck to you,