That must either be some other mod meddling with my stuff, a bug in the game, or something specific to your installation/system then. As I said, it works perfectly fine for me (and clearly lots of other people)...
First of all, do the mod's hotkeys work? As in, if you press shift+y (or shift+z, I'm not sure how factorio handles different keyboard layouts...), does it print stuff in the chat?
Second, is there anything suspicious in the controls settings? The mod should have perfectly normal looking bindings - things along the lines of shift+y, ctrl+q, ...
This should point out if there's actually a bug in the mod, or if another mod is doing something weird, but if that's all fine, could you try installing the mod into a completely fresh instance of factorio? Preferably the zip version, as that should be completely isolated. Don't even bother logging in, just get the latest zip, run it, install the mod and test it on a new sandbox game or something.
If that works, we know it's not a bug in the game, so it would probably have to be something with your install.
If it doesn't work, it would have to either be a bug in the game, or some system wide thing on you computer, neither of which I can do much about...