What is the exact error message, or screen that you see?
Some ideas... but Adobe support is likely going to have to fix a login problem
Sign Out When Sign In http://forums.adobe.com/thread/1450581?tstart=0 may help
BLANK Cloud Screen http://forums.adobe.com/message/5484303
-and step by step http://forums.adobe.com/thread/1440508?tstart=0
Chat Now button near the bottom for Activation and Deactivation problems may help
Thanks. There is no error message, just when I sign in the screen blinks and says I have signed out, so maybe that sign in/ sign out link has the answer.
I am replying to your 1st message, so you can go to a web browser and edit your reply message #2
Please remove your personal information, and turn your sig file off when using email
This is an OPEN forum, not Adobe support, and "spam bots" do harvest information to add to spam lists
Now, for what you said, the below may help
Sign Out When Sign In http://forums.adobe.com/thread/1450581?tstart=0