OMG. Thank you for the video. Good thing I didn't jump to buy it. I will wait for the next generation scanner. Anyway it's good job to get such results with 400$ scanner.
For Everyone who struggles with the selection ! If you select with STRG/CTRL and select something..... doesn't matter what. Delete it and UNDO it, after that you can see the selections (Clear your previous selection). You have to repeat it by every scan. Also the Polygon selection doesn't work. Square selection is useless, as long it isn't possible to realign XYZ coordination during the edit.