Once I deactivated W3 Total Cache, the link localizer has worked for the most part. I was able to test France, Canada and Germany and they all work.
But every time I try from the UK, it doesn't change. I don't know how that's possible. I have a UK affiliate ID put in. But still doesn't seem to work.
If anyone here is in the UK I'd appreciate if you could test the Amazon links here and let me know if you're getting them changing to UK or not.
If they aren't working, as I'm finding, then hopefully Pete can take a look?
Once that's working, I'm still hoping to learn more about whether it's completely impossible to use this with a cache and what to do if it isn't. But I'd love to get the UK links working too.