How to resolve translation errors in a multilingual online store?

So we’re just about to translate our whole store into 4 languages, with our primary being Danish.

We are only using “Translate & Adapt”.

The problem began when i switched our primary “Default” language to “Danish” from “English”, when i did that, then the auto messages in our store all have this error:

How do i fix this ?? Since i cant find these titles in the translation app, and my best guess to switch back to having our default language to english again. But would that have any impact on anything ?

It is usually not recommended to switch default language. It causes a lot of damage as you have experienced

Try watching this video

See if this helps.

Thank you very much. I also found this helpful to apply in our own current translations!