Thanks for your prompt response.
Yes, it is a Category. And yes, I do have the specializations assigned / connected to the categories. That's why it's weird. Please see:
Specialization: "Economía" is connected to "Concejo". But:
"Economía" is NOT shown... Only one: Medio Ambiente.
This does NOT happen in the main page, where all specializations are shown fine:
Please watch the following video; there you can see how it definitely doesn't show all specializations even if they are connected. It only