Hey Rafa,
I’m really sorry for your problems here. I cannot recreate this issue and have not heard of it myself, so I’m curious, would be able to first see if any errors pop up on your site if you head to your site’s wp-config.php file and change this line of code:
define('WP_DEBUG', false);
to this:
define('WP_DEBUG', true);
That will display PHP errors on your site if any exist, which might help here.
If any errors pop up, copy and paste them into Gists at http://gist.github.com and share links to those Gists here.
If errors do not pop up, try leaving The Events Calendar active and then running through the steps listed here → https://theeventscalendar.com/knowledgebase/testing-for-conflicts/
It may be possible that another theme or plugin on your site has specific code that is causing a conflict when The Events Calendar is active.
Let us know what you find!
Thanks,
George