Good evening Andres and welcome back!
Thank you for reaching out to us.
We’ll be glad to give you the requested status update.
The status is fairly straightforward. Currently, only the Core plugin has thorough integration with WPML.
For the most part, Pro works well with WPML as well, except when it comes down to recurring events.
This has been logged as a bug and is currently going through the release cycle. I cannot give you a date for now however.
So in short, the good news is that the 404 errors of 2014 are gone, thanks to some hand in hand work with the folks from WPML.
The Events Calendar’s goal is to complete integration with WPML for Pro and even Tickets Plus this year.
Hopefully sooner than later. So stay tuned!
I am not at liberty to disclose clients examples of the Calendar using WPML, but as a WPML user myself, I use the Events Calendar and WPML every single day and the integration is seamless.
Let me know if that helps.
Have a great day!
Geoff B.