How do you display an "assets object" in a portal when the user is not logged in?

[Ben]

Hi,

I have created an advanced custom field of type "Assets Object". This field takes information from "Assets" (say "product A" and "product B") and displays it in the portal.

This works all fine, but ONLY if a user is logged in already. My portal is "open", meaning the option "Customers can access and send requests from the portal without logging in" is activated. So, anyone can look at the portal. 

If now a user IS NOT LOGGED IN, the user does NOT see the "Assets Object"-field, while any user who is logged in, does see the field correctly. The field is not associated with user information. It is just an asset object that lists a bunch of product.

Can anyone help?

Kind regards,

Ben