Sorry to hear that. Send me your Adobe ID, location, and phone# through a private message. Click my picture and use the Message option. We will get in touch with you for investigation.
This is clearly a common issue, why don't you publish helpful information without requiring faffing about with sending you personal and private information?
We do not seem to have a common reason for this issue yet. We will definitely consider a doc if we think we have some common troubleshooting steps that you could try out.