I’ve also had this problem, and have no idea about where it does come from.
Events disappeared from em_events table as well, and just recurring ones stayed.
I have no backup plugin installed, however i’ll post a list of them:
WP Banner, CodeStyling Localization, Duplicate Post, MailChimp, WordPress Importer.
At the moment i’m running version 5.0.51 of Event Manager.
Do you have any suggestion about recovering events?
Should i install a backup plugin or is there a fix or any other solution?
Thanks