If you are desparate to log on to SISI you can get around these current issues as follows.
Click the E top right of the launcher, this will pop up a small window with the servers you have added to the launcher listed.
Click the “Play on Singularity” button
This will bring up the old log on screen, enter your details and hit connect.
You will have no client settings, so anything you have personalised (windows, chats, overview etc) will not be present.