I've just been on the phone to them. We had issues around a month ago then it was fine for a few weeks, but since Friday it has been playing up again. SWGFL said they don't have an idea of timescale but to send them the time, IP, proxy and browser each time it fails to log in...
They said that a workaround may be to use IE, clear the cache, put it in compatability mode, close and reopen.
I must say, it's been a fair while since we have had a proper service and it is starting to cause some ripples now...