translation other language (free version)

i’ve seen this topic also here:
https://www.ads-software.com/support/topic/weekdays-names-in-other-languages-2/

for some reason can’t re-open. But i have the same issue. site has english labels but is in dutch as main language. in the settings i can only indicate the time zone/format, that’s it.

hope to hear from you.

The page I need help with: [log in to see the link]