Blender Tool not working
My blender tool isnt working at all. Every time I make 2 lines, select them, then click on the blender options and try to select my options, the preview button is greyed out and no extra lines come out. I was trying to follow this tutorial (https://youtu.be/NMerkeTJ0nY?t=54) but I can't do anything if the lines don't even show up. I've reinstalled the program and reset all my preferences to no avail

