Hi Ian,
Your account licenses were freed up on Friday the 8th, May - you should have received an automatic email when this was done but it sounds like it may have been eaten by a spam filter.
There has been a glitch with the DNS for the squ1.com domain, but this should be very close to sorting itself out now. However, there is a quick work-around provided on the front page of the ecotect.com site that you can apply in the interm. For more details, see:
http://ecotect.com/activation/license_server_problems
Hopefully this will get you up and running immediately...
Kind regards,
Andrew
--
Dr. Andrew Marsh
Principal Software Engineer
AEC-Simulation
Autodesk, Inc.