Missing functions in Athena Pro?

Hi all,

I have used the Altena Free version first and was so impressed I went ‘Pro’.
I downloaded and installed the Pro version, activated the license and the imported the settings of the Free version so that the basis I already created would be there. So far so good.

Then, when I wanted to work on the theme I started having issues.
I cannot find certain options at the spots they have been documented by the SmartCat team. For example, am not able to change the slide images (should be: appearance / customizer / Jumbotron), change the callout buttons (should be: appearance / customizer / frontpage / Icon callouts). None of these appear to exist in my version?

Could this be related to the language I am using for the wordpress installation (Dutch)?

Hope someone can help! Thanks!