In my experience, the add-on Hide Log-In Announcement does not prevent the Announcement from being displayed after the character which the player selected is loaded. However, the Announcement will vanish after 2 or 3 seconds, so the player doesn't have to press the <Alt> key to dismiss it instead. It is probably impossible to prevent it from being displayed.MinarasLaure wrote: »There is an add on that blocks it if you're on pc.