@ Seun Tayo
RE: how do I ensure that all the 8 fields are exported (saved to the database, and displayed in forms and links?
By registering the fields… the data will be saved to the database. Try it. If you have successfully registered the fields, add a new entry. Add data in your custom fields. Save the entry. Now edit that entry, you will find the data saved to the database and can be edited.
RE: and displayed in forms and links?
To display in Form, Navigate to the Connections : Settings admin page and click the Form tab. Enable your metabox in the available options and save.
There is nothing special you need to do for link. :)
RE: I was able to see the single field when I exported the database, however this is not displayed in the front end.
Can you please describe how your are exporting the database?
To display the field in the template, please see the developer doc on how to display the custom field in a template. It has sample code. You will need to use it once per custom field that you registered.
