INBOX MESSAGE HEADERS NOT DISPLAYED

I know there are new messages in my Inbox because there are three little periods after the word ‘Inbox’ in the mail pane. But the pane listing emails that have been received is blank - no sender information, no subject, no date received - nothing! The only way to see those emails and to have the subjects listed in the pane is to do a ‘Repair’ on the Inbox.

This cannot be right. Does anybody know what the problem is and how to fix it?

Thank you!

I replied on the duplicate post at https://forum.emclient.com/emclient/topics/inbox-messages-not-displayed