UPDATE: it started working just of now! N-I-C-E-!
Just pinging the staff in hopes that will get this issue solved as quickly as possible.
The Launcher error comes because of 503: Service unavailable on servers end. See below for recent comments.
Please get this fixed! 
Subscribed today for the first time, this is really not a good way to impress new customers, hehe.
Having my hopes high for quick resolve! Cheers!