Hi Carey,
There is currently a support ticket open for your question (ticket # 8996) from an e-mail that you had sent to
support@plumgroup.com.
For them to aid in diagnosing your issue, could you please also send a copy of the contact list that you are attempting to upload for your survey?
About your question on not being able to name your own headings for imported lists, the field names for the contacts is a set list for only relevant information such as the contact's first name and last name, phone number, e-mail address, street address, city, state, and zip code. But, we can bring this up to our survey developers to look at as a feature request to be implemented in a future patch.
Regards,
Plum Support