Error 404 every link + hidden post

5 days ago I downloaded the plugin for the first time.

I changed the settings and created forms to enter events.

Then I imported events by wp-all-import. The events are entered correctly, but I view them, I get a 404 error.

I had changed the structure of “events” to “eventi”

That’s what I did:
– saved and changed the settings of the permanet link
– uninstalled all plugins.
– Change the original theme

But it still did not work. I then did a reset of the plugin.

All articles published by Wp-to-import disappeared.

In all events, I see 192 published events, but the list is made up of only 2 events (manually entered ).

I deleted the plugin, I deleted the theme and installed again. I saved the permanetlink several times. I only left the Event-plugin manager and the original theme, but does not work.

http://musicistiemergenti.it/eventi/