Like Jean pointed out that tool is missing, lot of Rhino tutorials will not transfer over to Shapr. Rhino is more like Blender with Curves. Shapr is more like a traditional 3d CAD program.
If you want do what the video shows you might want to look at this soccer ball post. It’s the same concept. For you it will be easier to do than the soccer ball since you don’t need all sides fully connected, even in that rhino demo you don’t see the pattern go full circle so that would be easier to do.
Also not sure what you mean by bottom not being flat.