This thread is resolved. Here is a description of the problem and solution.
Problem:
You are trying to switch WPML from a development site to a production site and encountering an error 'Unable to register: Site key not matching' when entering the site code.
Solution:
We recommend you unregister and then re-register WPML on your site by following these steps:
1. Navigate to Plugins → Add New and select the Commercial tab.
2. Click on Unregister WPML from this site.
3. After the page reloads, click on Register WPML. You will be prompted to enter the site key. Click on Get a key for this site.
4. In your WPML account, complete the site key wizard and choose the option for a Production site.
5. Copy your new site key and paste it into the Commercial tab. After this, you can delete your old site key from your WPML account.
For additional guidance, please visit How to remove the 'This site is registered on wpml.org as a development site' notice.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If issues persist, please open a new support ticket.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.
Our next available supporter will start replying to tickets in about 2.57 hours from now. Thank you for your understanding.
