Your site will not work as it should in this configuration Please update all components which you are using. For WPML components you can receive updates from your WPML.org account or automatically, after you register WPML.
I have registered WPMl, so why has this not updated automatically?
What do I need to do to get it updating everything automatically?
If by automatic updates you mean that WPML and its add-ons will update automatically without any action from your side as soon as the new release is out, then we do not offer such updates. You need to go to Plugins->Installed Plugins or Dashboard->Updates and update our plugins yourself when you're ready to update.
Also, when you update the core plugin, you need to update all add-ons as well because old add-ons are not compatible with a newer version of the core WPML plugin (this is why you get the warning message).
Registration allows you to update our plugin from the admin panel, as opposed to the manual updates via FTP.