The Geo Redirect plugin was working great, then suddenly *seemed* to stop working in many of the instances where it was supposed to redirect visitors to another language.
After a lot of troubleshooting, the best sense we have is that Geo Redirect does not work when a caching plugin is active (such as W3 Total Cache in our case).
Do you have any ideas on how to get Geo Redirect to continue redirecting when W3 Total Cache is active?
(In W3 Total Cache's setting for CDN (Content Delivery Network) there's an option to manually "Specify the path of files that should not use the CDN." But, I'm not sure which files should be set there.)