This thread is resolved. Here is a description of the problem and solution.
Problem:
In the plugin section, I have the following alert:
"WPML plugin cannot connect to wpml.org
WPML needs to connect to its server to check for new releases and security updates. Something in the network or security settings is preventing this. Please allow outgoing communication to wpml.org to remove this notice."
After that, please try the following steps:
1- Deactivate all of your plugins except WPML CMS
2- Go to plugins-> Add new-> Commercial tab
3- Click on "Unregister WPML from this site"
4- Click on "Register WPML"
5- Click on "Get a key for this site"
6- Register the site and enter the key
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.
Hello,
1. On this website with different domains, one per language: hidden link
2. In the plug-in section, I have the following alert:
"WPML plugin cannot connect to wpml.org
WPML needs to connect to its server to check for new releases and security updates. Something in the network or security settings is preventing this. Please allow outgoing communication to wpml.org to remove this notice."
I have checked from our side and it seems it should work fine, please try to disable any security or cache plugins and make sure your hosting is not blocking connection to *WPML.org domains
Then please force re-check as explained here and the message should go away:
1. I forced re-check, many times, but the error still exists
2. I went to support installer. There is still the error:" site key does not match for: xxx.com"
3. Also, in the Advanced Translation Editor Error Logs, there are many errors, such as: "Started attempt to download xliff file. The process did not finish." ; or "Service Unavailable"
After that, please try the following steps:
1- Deactivate all of your plugins except WPML CMS
2- Go to plugins-> Add new-> Commercial tab
3- Click on "Unregister WPML from this site"
4- Click on "Register WPML"
5- Click on "Get a key for this site" (Kindly check the attached screenshot)
6- Register the site and enter the key
Also, please make sure that your server doesn't have firewall rules blocking WPML calls.