This add-on is awesome. My only true issue is that the mobile options clash with certain sites requiring desktop formats or certain browsers. This is understandable though. To remedy this, I disabled all classing browser options, including the all mobile browsers, Edge, and Firefox ESR.

Try the following site to test Chameleon after choosing your options:
https://valve.github.io/fingerprintjs2/

Once tested, refresh the page and test it again.