Going to Upverter I get
System Unavailable
Upverter seems to be unavailable at the moment. This is most likely due to gnomes stealing our underpants.
Please try again in a few minutes
Since yesterday.
I Upverter down?
Thank you
Frank
Same results for me. 24h+ later it’s still not working.
Hi,
Got access to my Upverter files!!
When I got the message “System Unavailable”, after a day I deleted the Upverter cookies.
After that Upverter not longer recognized me.
In desperation I reported the problem via the Altium support. A really good support person actually called me up. On Friday Feb. 18 he informed me that my issue was being worked on. And today I can access my designs:) 
I’m so grateful to Altium support for their assistance. WHAT a great relief. THANK YOU ALTIUM!!