juniorF

Problem:
If you're unable to register the WPML plugin because your URL has changed,
Solution:
First, check if the issue is a false positive due to server caching. Navigate to Plugins > Add New > Commercial and click the "check for updates" button. If WPML still shows as registered after the page refreshes, it's likely a false positive. The notice you're seeing is about WPML's connection to its servers, not about the registration itself.
To change the WPML key, go to your site's backend, under Plugins > Add New > Commercial, where you can unregister WPML from the old key and re-register with a new key. Generate a new key at http://wpml.org/account/sites.
If this solution doesn't resolve your issue, please open a new support ticket.