Compatibility with Firefox 38.0.5?
According to the various problems specified on major forums, the software is having issues with Firefox. Yes, it works with Firefox, but nothing has been mentioned about supported versions of the Firefox browser. You will have to try it by yourself to see if it works or not.
You can use the guide on the Firefox website to install an older version of the browser: https://support.mozilla.org/en-US/kb/install-older-version-of-firefox
