Hi,
Sorry for the issues you are having.
I can help troubleshoot these with you.
Account
Your account is tied to an email ending in @sunset-technologies.cat
You can enter your email that ends like that on this page and setup your password:
https://theeventscalendar.com/my-account/lost-password/
Event Sort
I see the issue on your site. Do you have any plugins that customize Post Order or Category?
If not can you run through our testing for conflicts guide to see if that helps narrow down the issue:
Testing Conflicts With Themes and Other Plugins
Let me know what you find out and we can go from there.
Thanks