I was wondering if any one can help I have run

Hi I was wondering if any one can help I have run in to an issue with a plugin, visualizer.
It creates charts from excel sheets and has been the only one I can find that does it well but when the excel sheet includes trademark symbols. It either doesn't load the excel at all or the content in the box cuts off at the trademark symbol.....could anyone suggest a way I can include these.

Also when you hover over the bars in the chart it produces a pop up, can anyone suggest a way to add more info to this box? So for example the box currently shows the price but I would like to show the price plus savings info.

https://wordpress.org/plugins/visualizer/

Or if you know of any other plugins that can do this, would be appreciated.

It is for the chart on http://dermatological.graphicicing.co.uk/healthcare-professionals/epimax-product-information/