cd /opt/Ombi (Or wherever your Ombi DB is located)
sudo sqlite3 Ombi.db
DELETE FROM PlexServerContent;
DELETE FROM PlexEpisode;
DELETE FROM PlexSeasonsContent;
.quit
sudo service ombi start
Within Ombi, disable email notifications: “Settings -> Notifications -> Email -> Uncheck Enabled” (This prevents your users from receiving tons of spam for their existing requests)
Within Ombi go to “Settings -> Media Server -> Plex -> Click ‘Manually Run Full Sync'”
After the scan has completed, re-enable email notifications.