Hi Michel,
Thank you for volunteering to help out! We really appreciate it. The translation for The Events Calendar and Events Calendar PRO could be updated, but it’s still relatively recent.
However, our Dutch translations for Community Events, Facebook Events, Filter Bar, and WooCommerce Tickets are pretty outdated. It would be great to have you update those for us.
Please read over our article on Adding or Updating a Translation. You’ll find all the instructions and files you need there 🙂
Best,
Leah