Contents of emails missing
After an upgrade of Thunderbird Around 12/27-28/21 almost all of the contents of my emails before the upgrade have disappeared, 2012 to 12/27/21. Emails after that date were sent to a new folder, Inbox2 and they are readable. I have since had new emails rerouted to the main Inbox. How can I restore the contents?
FYI - I tried repair folder and all of the emails vanished. I have since restored the last backup. All emails are from AOL; no other backups exist before 1/20/22 without going to my old PC which was last used in July so I would still lose everything between then and 12/27/21 to 1/14/22.