Sync Errors on multiple platforms

I am using EndNote x8. 

When trying to sync my windows machine, I get Client.Error.Unknown. On my Ipad, I get Bad Response from HTTP server: 503

What is going on?

Both installations have been working for more than a year, and nothing has changed. They are on two different networks, so it has nothing to do with permissions.

suspect this is because it looks like myendnoteweb is down. 

There was a tweet this morning (6:30am Tasmanian time, just under 3 hours ago) stating that Online and sync services were undergoing manintenance.