I spent some time talking with KC on vent. It turns out that Maximizer wasn't working because I have my region settings set to Japanese and was extending the advanced text services to all programs. Apparently these advanced text services create a hidden window with an identical process ID to WoW when it opens, Keyclone was picking up on this hidden window instead of the WoW window.

If you are having this problem, there is a very easy workaround.

1. Right click on your Wow.exe and click properties.
2. Go to the Compatibility tab
3. Check off "Turn off advanced text services for this program.

You need to do this for all instances of WoW.exe

It would be nice if a future update Keyclone could handle WoW with advanced text services on, but the workaround is pretty fast and easy.