[Решено] WPML plugin cannot connect

Background of the issue:
I am trying to ensure that the WPML plugin is properly connected to wpml.org for our website скрытая ссылка. We relaunched the site a few months ago, and I am concerned about the connection status.

Symptoms:
The notice 'WPML plugin cannot connect to wpml.org' appears on the backend of our website. The error message indicates 'Unable to Register - Site key not matching'.

Questions:
How can we reconnect WPML to wpml.org without losing any of the translations previously made?