Dutch Translation progress

Hi,
I did quite a few suggestions in https://translate.phplist.org/ but how these suggestions are processed?
I am not able to save a translation (which is explained) but how can I make some progress.

We’re trying to get the translation system back in action. If you do an “update translations” in phpList, it should all be there. Please let me know if that’s not the case.I tried to ensure to retain all existing translations, but figuring out how Weblate works wasn’t too easy.