Getting inconsistent results usually means that your coloring is in-between two or more color types. This is a tough challenge not only for a machine but for a professional stylist too!
A nice thing about colorwise.me is that you can check as many times and with as many photos as you want to explore your coloring possibilities. If you repeat the analysis several times, you’ll notice before long that one palette is returned more often than any others. That’ll be your best palette.