This add-on used to work for me. Now that I've upgraded to Quantum (v60.0, 64 bit, Win7) it is no longer working.

I am trying to use the "replace" action. I have confirmed using LiveHeaders that when I visit the target domain, there is NO "Referer:" directive at all. It's not wrong, it's missing. WilliamAHuston@gmail.com thanks.