I've gotten many complaints about this. FoxyProxy did not change but Firefox did. Can you please uninstall and then reinstall FoxyProxy? Hopefully that fixes the problem. I'm sorry I don't have a better answer.

Need more info if you want it fixed. All tests I've done are passing. You can email me, or the support page, or write a bug report on github -- your preference.

Please update to version 7.3, just released a few minutes ago. In firefox, go to about:addons in the address bar. Click the "gear" icon and select "Check for Updates"