This thread is resolved. Here is a description of the problem and solution.
Problem:
The client is unable to use the WPML plugin because the site key is not recognized after changing the development site.
Solution:
1. Visit https://wpml.org/account/websites/
2. If the site URL is already registered, delete it from the list.
3. Re-enter the site URL to generate a new site key.
4. Click on "Show key" and copy the new key.
5. Navigate to Plugins > Install > Commercial (tab) on your WordPress dashboard and enter the new key to re-register WPML. If WPML is still registered, de-register it first.
Additionally, ensure that the site URL used matches the registered site URL exactly, including whether it uses 'www' or not. If necessary, generate a new key for the exact URL being used, such as https://www.quillca.com/.
If these steps do not resolve the issue, we 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 the problem persists, please open a new support ticket.
This is the technical support forum for WPML - the multilingual WordPress plugin.
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