Aaargh. Stuck in sign in loop. Cant get out of it. Spent hours. Deleted App, re-dowsnloaded app, restarted over & over, deleted folders associated with App in Library/Application Suppport, tried different Adobe ID logins. Nothing works. Help! Please. I have no flipping antivirus or security software. Im on a home network. I cannot sign in! New software complete waste of money. On a Mac, this is a brand new Mac.