They are disconnected. Most of Habmin like the dashboard and Scratch rules editor and the like have not been well maintained. Most of us only used Habmin to work with administering zwave.
HABPanel is one of the most popular UIs. Can you explain what you mean by it not working? To my knowledge there is nothing that doesn’t work in HABPanel.
If you want control over the charts, you need to use an external charting software like Grafana. See InfluxDB+Grafana persistence and graphing