I've also been getting this error 100% of the time since subscribing our team to Creative Cloud earlier this week - so far the money's been wasted and have found no way to access adminconsole.adobe.com.
I can access creative.adobe.com just fine - but this is useless for me, as it is entirely personalised and contains no options or data that are related to the administration of my team account. I've called the support line, but was sadly unable to find anyone offering support - only sales advice!
Anybody able to shed any light on this whatsoever? All the Adobe Support I've been in touch with is entirely unable to assist with website problems - they just want to sell me the software that I already bought ; )