Recent versions of the plugin have improved support for some of the WP native fields such as nickname, user_nicename, and display_name. I will be continuing to improve support for these fields. Currently, if you want to add something like the Display Name field to the front end of the plugin, you need a little customization. This post will take you through adding that to the front-end user profile update.
This needs to be done in the user profile update and not at registration because WP bases these fields on data used in registration that is not available on the static form – the nickname, the username, and first/last name. This tutorial focuses on adding it to the user profile update, much like WP’s backend (which doesn’t set this at registration, either).