Problem: The client was experiencing issues with their website's connection to the WPML and ATE servers, receiving errors such as 'Your site can't communicate with https://api.wpml.org/. Code 403.' and 'ATE Server Communication - Service Unavailable.' Despite whitelisting the necessary URLs, the problem persisted. Solution: First, we confirmed that the client had whitelisted the correct URLs as per our documentation: WPML connection troubleshooting documentation. Next, we escalated the issue to our systems team to investigate if there was a block on our end. It turned out that the issue was caused by a regex rule on our server that was blocking the pattern appearing in the client's URL. We resolved the issue from our side. If this solution doesn't seem relevant to your situation, please open a new support ticket with us.
