How to change language in Agenda

What I did: I don’t remember

What happened: the language is not in English. iPad settings are only in English, but language of agenda app is something else (please refer to photo).

What I expected:

Things that might be helpful to know (Agenda version, OS and model, etc): iPad os version 18.1.1


That’s really odd, it seems to be using Afrikaans, could that be? Does it help if you add Afrikaans, in the preferred Languages but as second language?