Problem:
The client was getting an "Update failed: undefined" error on updating the WPML plugins and also seeing the "WPML plugin cannot connect to wpml.org" notice on the site's dashboard.
Solution:
Please delete the existing site key and create a new one by following the below steps:
1. Please login to your WPML account >> Go to the Sites page: https://wpml.org/account/sites/
2. Delete the existing site key.
3. Create a new subscription key for your site as a production.
4. Visit the Site Dashboard and go to Plugins >> Add New >> Commercial tab.
5. Click on the “Unregister WPML from this site” button.
6. Register with the new site key and refresh the page.
7. Click the “Check for updates” button and try to update the WPML plugins. Here is the screenshot for more details: https://wpml.org/wp-content/uploads/2020/04/wpml-force-plugin-update-1.png
8. After registering WPML with a new key please follow the below steps for removing the “the WPML plugin cannot connect to wpml.org” notification:
8.1. Please go to WP Dashboard Menu >> Updates.
8.2. Press the "Check again" link.
8.3. Now please go to the Plugins page and see if that notification still exists or not.
