I've installed Sweet Home 3d on 2 computers (Windows using the Windows store version). The first works fine, but I'm unable to edit using the second because it keeps giving me a nag screen about buying. What's going on?

The 0,0 coordinates on the grid have moved to the far lower right of my screen. Is there a way to move it back to the upper left?

<t>I used these instructions to create a vaulted ceiling:<br/>
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1. Draw your room walls at the standard height.<br/>
2. Create a new level above the existing one.<br/>
3. Go to the new level and draw sloped walls that rise from the level below.<br/>
4. Adjust the "Height at start" and "Height ...