Ask a question page not work with WPML

Hi,
I have a problem with the Ask a Question page in combination with WPML.
The page in the default language works correctly.
But if I go to the translation, it only shows the forum file. It shows the same erroneous page both with login and without login.
https://www.fundacioictus.com/comunitat/forum/nou-tema/
https://www.fundacioictus.com/es/comunidad/foro/nuevo-tema/
Can you help me?