Adding Cupla affects entire plan

[BB boy]

In an effort, to not allow the soft-ware to defeat me, I started a brand new plan. So far I've managed to do the manual dormer, with MY home made round top vent/louver; however, I am unable to get the gables to draw correctly (they are now missing at the porch) and even though I followed DJP's You tube and attempted to edit the height of the cupola.....NO DEAL....no matter the changes I make it has reached it's current height and keeps telling me to go take a hike when I attempt to set a new ceiling height. So what you see is what I have at this point.
I am still working on it! I have only drawn the exterior walls visible and invisible to this point. @ 1 you see the cupola just stays at that height no matter what. imaginary bottom drops lower when I fiddle w/different heights. @ 2-no gable at the porch area and even if I try to draw it manually nothing shows.
So, I keep working. I had to change the porch from invisible walls, to railing with post to beam no shoe, top or bottom rail and also put a ceiling in although I didn't want one. Then the software cooperated and put my gable walls back in. While clumsily searching for gable vent, I came across Arched top vent louver in of all places-Mech, Elec, Plumbing "ventilation" well imagine that. I guess to keep the gable ends I'll have to do what the software wants, and doctor the posts up to get a Wood wrap with cultured stone base.