Here is the export of the form:
[SITE REMOVED]
Save that to your desktop. Then go to your site, Forms > Import/Export > Import Forms. Import this json file.
Then, you can add this CSS to style the field as a read only field. You can add this CSS to your theme (or child theme) stylesheet or via the Appearance Customizer (Appearance > Customize > Additional CSS):
.gform_wrapper input[readonly='readonly'] {
color: #999;
border-color: transparent;
background-color: transparent;
cursor: not-allowed;
}
Then, embed the form in a page on your site, and load that page. You should only see the email input and the submit button. If you populate the field with the parameter name pakket
and the value 1 or 2 or 3 or 405, you can see the different text fields being conditionally displayed.
If you need anything else.