Exactly, the course layout is also built with custom post fields. when we send to translate these pages, the name of the fields are translated but the values of the fields remain with the original language.
For instance, this is a coaching course which original language is catalan:
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the translated page in spanish looks like this:
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As you can see, the fields like 'Fecha de inicio', 'Fecha fin', 'Modalidad', 'Horario', etc. are translated properly. However, their values remain in catalan.
Moreover, in te spanis version of the courses the menu languages is not shown.
Finally, in the footer of all pages is shown the banner with this text 'This site is registered on wpml.org as a development site..' I think it is because I have to profiles with this domain but I don't know which one I have to remove and how to do it.
regarding the development notice, it's best to re-register your website. You can follow the steps described in the section "What if the notice still appears after moving to production?", in the link below: