Graphics of thermometer not shoing?

May I know what browser are you using?

also may i know what other plugins are you using? maybe there was a conflict with the html5 canvas.

you can also try to look at this error from your console :

Uncaught ReferenceError: jQuery is not defined nivoslider.js:67
Uncaught ReferenceError: jQuery is not defined jcarousel.js

—->

This is from the updated sample of the plugin

https://scoopdesign.com.au/wpch_thermometer/charity-thermometer-plugin/

The image is showing up.