Jo_Ann's post in How to attach a deck room addition's shed roof to the homes existing gable roof was marked as the answer
Jo_Ann's post in Mysterious persistent room dividers that can't be deleted? was marked as the answer
What I see, when looking at your jpeg image, is that you've used glass shower walls to draw the shower as an entirely separate room within the bathroom. This makes it an 'island' room, and auto drawing a connected divider wall to an existing wall, is how the software deals with this type of room.
Jo_Ann's post in Railings Appear as Solid Walls was marked as the answer
1) I do not see that large fir wall designated as a "railing". Draw a railing wall over it, and change it's style in the railing wall dbx, to show only posts to ceiling.
2) On floor 1, delete the wall directly below the balcony railing wall, and the balcony railing will show correctly.
3) The balcony needs to be shortened, and the stairs extended over to it, to avoid bumping into the exterior/roof wall. You can then set the portion of the new wall at the top of the stairs, as "invisible".
4) On floor 2, uncheck "flat ceiling over this room". Architectural does not build rafters, so you will have to build your own (use sloped soffits).
Jo_Ann's post in Can't connect wall and dormer wall to make open to below was marked as the answer
So, do the same thing that you did up front.
The reason it didn't work for you in your video, is because you have to keep a small gap between the dormer wall, and the interior wall.
Jo_Ann's post in Building a 2nd-Story Gable Roof Extension off of a Gambrel Roof was marked as the answer
What Eric said is important, so I am just guessing....
But maybe this will get you headed in the right direction.
Jo_Ann's post in Two Story country cottage, roof woes (A frame with porch) was marked as the answer
The 1st pic is the original cottage. Pics 2&3 are the vertical flip of the cottage.
My floor plan might help you with your settings. Pay close attention to the garage/house NON connection on level1.
Delete your 2nd floor and rebuild using blank plan with finished ceiling height as shown (or do a 'save as', then delete the 2nd floor). Align walls as shown.
Pay attention to ALL floor/ceiling settings, roof pitches, and walls.
The roof between the front breakfast room and garage is a problem area with auto roofs. You could add a sloped soffit to make it look better.
When the roof is correct, turn off auto build roof, and rejoin the walls between the garage and house. Invisible walls will probably be needed to maintain some floor/ceiling heights in that area. Go slowly.
Redraw the interior walls on the 2nd floor and raise the ceiling heights within the usable rooms.
Because I had to trace the floor plan (to work on it in HDA10) the dimensions are not exact, but they are close. It may not be perfect, but I hope this helps.
WeebleSue cottage flip.plan
Jo_Ann's post in I need help with a breakfast bar was marked as the answer
Use a base cabinet set as a peninsula base. In 3d window, drag the bottom of the cabinet all the way up to the bottom of the countertop. Open the cabinet dbx/front tab. Select and delete the toe kick. Only the countertop should now remain.
Use a soffit for the narrow rectangle extension.
Jo_Ann's post in Floor Missing was marked as the answer
If you open every one of the wall sections on level 0, and uncheck 'foundation wall', the floor reappears.
Like Kbird said, there is a rogue wall section south of the ship (on level 0).
I also noticed that there is a gap between floors 0 & 1, at the front (south) side of the ship.
Jo_Ann's post in Is there a way to easily find the square footage of each room? was marked as the answer
Tools>display settings>display options>rooms,interior area (put a check).
In your reference manual, look at rooms>room labels for an explanation of the different room labels.
Jo_Ann's post in Window bump has problem with egress well was marked as the answer
Use a half-wall (railing wall) instead of a foundation wall.
Make this wall the thickness and texture of a foundation wall.
Open the room spec of this 'room' to alter it's elevation.
Open each wall spec to change it's height.