I just downloaded the software (7.5.35) and watched some tutorials. I drew out the walls for a room and added dimensions. But when I try to modify the wall height (either by double-clicking a wall or right-clicking and selecting modify walls) and hit "OK", it takes me to the upgrade page for the Pro version.FWIW, if I hit "OK" without making any changes, it returns me to the layout.

My plan is not locked and the features that I am trying to modify (height and wall width) are not greyed out.

Any suggestions?