Hello, Thanks for letting us know about your problem. Its our pleasure. Generally after updating, sometimes your theme cant cope with the update process. therefor it seems not support with your browser versions. So sometimes Firefox gets security issue and turn off the theme. For fixing this problem, you can try by removing the theme and install it again. For more instruction on removing and installing themes, you can see this article [[Use themes to change the look of Firefox]]. Hope this answer is helpful. Please let us know if this problem can not be solved by mentioned process. Regards Safwan