I’m having this same issue. I simply want to display information from the custom fields on the final quiz page, but the object data for the form is NULL.
It appears we’ll need a method to perform a database query, however I don’t believe this will always work as the custom fields don’t seem to update in the database unless the user or quiz id changes.
There doesn’t seem to be any support for this plugin, so if I find a solution I’ll post it back here.