I am not sure, but it is not plugin related, as the plugin does not affect that. I would definitely check the .htaccess rules, as well as the configuration of the multi-language solution, especially around permalinks. It is also possible that the CDN you have might be redirecting incorrectly. It has to do something with redirections or permalink processing.
Best, Ernest Marcinko If you like my products, don't forget to rate them on codecanyon :)