Background of the issue:
I am trying to auto update the WPML plugin on my WordPress site. The issue can be seen at the following URL: hidden link.
Symptoms:
Instead of seeing the auto update, I received a banner message stating: 'O plug-in WPML não pode se conectar a wpml.org. WPML precisa se conectar ao seu servidor para verificar se há novas versões e atualizações de segurança. Algo nas configurações de rede ou de segurança está impedindo isso. Permita a comunicação de saída com wpml.org para remover esse aviso.'
Questions:
How can I resolve the connection issue with wpml.org to enable auto updates?
There's a big chance that what you are seeing is a false-positive that remained in the server caching and the notification will be removed automatically when the cache will automatically clear on its own.
To check if that's a false positive, go to Plugins > Add new > Commercial > click the "check for updates" button and if the page refreshes and WPML is still showing as registered, then yes, that is just a false positive.