Event Form [Array] Issues

Seeing [array array] in the backend instead of a first name typically means there are two First_Name Unique ID's in the registration form.

Your registration form should always be free of duplicate Unique ID's, even if the fields are of different type.

'Standard' type fields will usually have their columns visible by default in the backend. Its respective 'standard' field must be added to the registration form, otherwise, these fields in the backend will be blank.