Hi Jacob,
Please ensure you have followed section 3.3 of the Zetadocs Express Installation Guide in each of the NAV companies. These configuration steps need to be followed for each NAV company that you intend using Zetadocs Express with.
You will also need to ensure that all companies within your NAV database are included in the 'Zetadocs Company IDs' table (9041211), see here for more info.
I hope this helps.
Kind regards,
