I find this plugin very useful and works really well. But for some reason, after the latest FF 57 build 10 update, the add -on does not seem to load. If I look at my list of plugins on the menu bar, I see a Loading... message for Proxy SwtichyOmega.
Try right-clicking on the icon and select "report issue" from the menu. It will open a form with error messages, which would be very helpful to locate the problem. Or, you can select "Save error log" and upload the log there or anywhere you like and then paste the link here.
