Hi Jordi,
We have not even tested our site in WPML so we are not sure that it works or not. So you may need code customisation and need to hire a developer to fix it.
Hi Jordi,
We have tested our site using .pot file but translation in three language is only possible using WPML but if you get some problem using it then you need code customization.
We are sorry for it. If we found better solution then we will let you know.