Citadel Studios has pushed a new client update, and we understand that a few folks are having trouble updating. The client update is not mandatory, so you can simply run ‘Legends of Aria.exe’ directly from the game folder to bypass the launcher, and create a shortcut icon to make this easier.
Our guide at https://wiki.shardsofbritannia.com/play recommends this method and has more detail. If pain persists, you can download a full version of the client here: https://cdn.legendsofaria.com/Legends%20of%20Aria-188.8.131.52.zip - this same link is also available on the Legends of Aria dashboard, under the 'Problems running the patcher?' link, though we expect this to be updated to 1.4.11 in the coming days.