Hi Mert
I am not sure if this is a Northeme-issue or woocommerce problem.
But on the page http://www.nivaagaard.dk/en/collection I have an issue that the "all" category doesn't show any products. It used to work – so this is a newer problem.

If i choose the submenu "the collection" under "collection" it shows all products. And the slug reads http://www.nivaagaard.dk/en/samlingen-page/

If i choose "all" in the category menu it shows no products and the slug reads http://www.nivaagaard.dk/en/collection/

This is a problem in all 3 languages

Can you help me solve this?

Best,
Nethe