None of the hotkeys I try to remap save, despite clicking the Add button. I often use my ctrl button, and WASD. Ctrl+w closes my tab, and I don't want it to. This addon didn't help that in any way.

Simply does not work for default shortcuts. I want to disable ctrl+w for a webpage that has a terminal emulator, and ctrl+w is one of the shortcuts I need to enter. I try to disable it through the extension, and it does not work even after restarting the whole browser. Does not do what is described.

This did not work at all. I got it in the hopes of nullifying the annoying F12/F11 keys, and it did not function at all.

Same as @Lethe. Waste of time.

Can't get it to work after reading instructions and FAQ and googling for an hour.

Doesn't work at all, what a shame

The only reason I installed this extension was in order to disable built-in Firefox shortcuts, which is a feature noted in several places. There is even a "Do Nothing" action to take for a shortcut key designed for this purpose. But it doesn't work; after a "Do Nothing" shortcut key is defined, the key still does its original built-in action. There are bug reports in Github for CTRL-J and CTRL-Q, I wanted to disable CTRL-W...but the answer is "that's not supported by the new Firefox API". Well then, maybe you should remove the feature!