Add columns to WC order page

Hi

Does the Vipps plugin change the fundementals of the WC order page? I am trying to add columns for a better overview of the order information, but am unable to see any changes.

I am using the add_filter “manage_edit-shop_order_columns” scripts that are found everywhere on the internet, but no new columns are appearing.

Any ideas that could lead me down the right track?

Thanks, Dave