I might be looking in a wrong place, but your post mentions “step 7”, “step 4” multiple times. However there are literally no occurrences of digit “7” across the whole post except those references. Could you maybe check this and put explicit links to which steps are meant in those sentences?

The problem I saw with EveryDoor for indoor mapping is that it basically doesn’t support indoor mode. While there is floor filter, it does not render/doesn’t show indoor rooms/walls, and it makes the whole mapping process insane if you want to go a bit further than just placing POI nodes (e.g. actually mapping the rooms/areas, elevators and stairs etc).