Hi @charrame and welcome back to the forums!
That’s no good and certainly odd because it isn’t something we have seen happen very often in the latest releases of the plugin.
Just to make sure, are you using the latest versions of The Events Calendar, The Events Calendar PRO and Community Events? It would awesome if you could head over to Events > Settings > Help, copy the system information on that screen and paste it here as a private reply. I’d like to see what’s running on the site in case it gives me some cues to work with.
Also, I see that this is one of the URLs being reported:
http://zaragenda.com/lugar/teatro-de-las-esquinas/
…but the URL for your events is something like this:
http://zaragenda.com/agenda/summer-camps/
Where is the “lugar” coming from in the first URL? Are you using a redirect plugin or forwarding URLs in some other way? I’m not totally sure yet, but the discrepancy here definitely seems fishy and worth looking into.
Thanks!
Geoff