I have migrated to ZD for three accounts, two POP and one IMAP. I was able to download emails from each of the accounts. Suddenly yesterday afternoon the syncronization to the IMAP account failed. When I call for synchronization, the rotating circle run a long time and then always return the red box showing the account was placed offline. I have run a debug trace, in case that would help someone identify what is going on, and will attach the log printout for the event as an attachment. I do not think I have made any changes to the account settings.
I can verify the IMAP server is running correctly using another email reader. There are emails to be downloaded if connection can be re-established. I have verified all the account settings. I have rebooted the computer and restarted ZD to no avail.