Changes in Event list redult in no update in db table

Since some month i struggle with events that i see only on the site, not in the list within the plugin. Now it became worse: events modified or created directly on the db table wp event list do not appear anyware on the site or in the application.
I than did a backup and deinstalled the plugin – the table remained on the db. I reinstalled the programm and – again – nothing happened on the db.

This way i see lttle option to further use the plugin, what is a pity. On the db i have little options; it’s not my server, just hosted standard.

The page I need help with: [log in to see the link]