Hey Guillermo,
Thank you for reaching out to us!
I’m very sorry about this issue you are experiencing, let me help you to solve it!
Can you please access your Dashboard and head over to Events → Settings → Display and make sure that the Month view is enabled and the default view also set to Month?
If you want to change the default view to something else, that’s ok, but you have to make sure that the option you chose is also enabled.
If you set a default calendar view that is disabled, it will return a 404 error and I believe that’s the cause of the issue you are experiencing.
If these steps didn’t help you to solve your problem, please let me know and I’ll be happy to further investigate your case.
Best Regards,
Patricia