I did another uninstall/reinstall of the extension and did manage to get the chart to work only when working with static data. (Something I didn't try yesterday). I still have the same issue when working with dynamic data. I'm not sure what you mean by "restarting or deleting the configuration". Does that mean to uninstall/reinstall the extension? If so, I'm going on 3 times doing that.
Do we need to open up a ticket?