I would be highly interested, if this worked - because nevertheless I am living at 48 deg north, I don't have a view to north from my balcony So without using a guiding scope it is really really problematic. I think, this is a scenario, which a lot of people might have. Or think, if you are in the mountains or have trees to the north.
Ok I tried the legacy tool, and works well. But it asks me to adjust the mount towards a “target” but I never saw a target. Did you remove that feature? The calculations were perfect and I used that to gain alignment. I am guiding right next w with a really tight tracking.