Please make sure that:
1. Your WordPress dashboard is set in Dutch (you can set it in Settings/General/Site Language section).
2. You selected Dutch while adding a new language in Loco Translate/Plugins/Hivepress section.
If so, please try translating some word like “Search”, click “Save” and check if it’s changed on the front-end. This screencast may help https://www.youtube.com/watch?v=zeOL8uh6jiM
Please use the official support forum if you have further questions https://hivepress.io/support/
My dashboard is already set in Dutch and I already selected Dutch in Loco Translate..
Please try following the screencast step-by-step, also make sure that the language you selected in Settings/General and the one in Loco (while adding a translation for HivePress) match, because there’re a few options for Dutch in WordPress (Netherlands and Belgium). There’s not much I can do from my end because I can’t ask for admin details on this forum.