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Problem:
You are unable to connect to WPML on your site, and you encounter a cURL error 28, indicating a failure to connect to api.wpml.org after a specific timeout.
Solution:
We recommend following the steps in our guide to resolve connection issues with WPML. You can find the guide here: https://wpml.org/faq/wpml-plugin-cannot-connect-to-wpml-org/
Additionally, please ensure that your hosting provider whitelists the following domains to allow proper communication:

• wpml.org
• cdn.wpml.org
• api.wpml.org
• api.toolset.com
• cloudfront.net

If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 you still need assistance, please open a new support ticket at WPML support forum.