Hello Michael,
Thank you for your feedback!
Highcharts are a Premium feature, while this forum is intended only for support related to the Lite/free version of wpDataTables.
Please open a ticket through our main support channel by following this guide:
https://help.wpdatatables.com/en/articles/39-how-to-contact-support
When you do, please include a bit more detail about the current Bubble Chart configuration and how you would expect it to work. For example, you mentioned assigning separate series to the X-axis, Y-axis, bubble size, and, optionally, color grading. The more details or examples you can provide, the easier it will be for us to evaluate the request and discuss it with our developers.
In general, the available chart options are largely determined by the Highcharts integration itself, so there isn’t always much room for us to extend the built-in configuration. That said, additional customization is sometimes possible through custom chart callbacks.
Kind regards,
Milos
