I wonder what happened to my old account..

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I can only assume that there were many deleted accounts from the update, since there were a load of spambots.
There could be a few problems with the program. Are you using Internet Explorer, Chrome, or Mozilla? What software is on the computer? (Ex. Windows.)

http://www.notessimo…47-randomguy59/
Have you tried requesting a new password?

Are you sure Flash is updated?