We fixed a small regression in 0.12.4 (“User aliases” link stopped working) and pushed the update as final update now.
Sadly in version 0.12.2 the FAF Lobby Updater is broken.
Please install the update directly from Github: Github Releases
Importantly if you can see this but can’t get into aeolus, this is why, and you need to update. Apologies for the inconvenience.