First of all, make sure under your device’s Settings app under Privacy, you have given our app access to Contacts.
Our app lets you use iOS Contacts as needed from several places – assigning them to be task owners, trip companions, event invitees, etc. When you do that, they are also added as a Contact in our app, that is directly linked to the original iOS contact, with all contact information accessible with a tap. Also, in the People + Services topic, you can manually add a new Contact with the option to directly import it from iOS Contacts. When you add a Group in our app, you can add members to it by selecting multiple iOS contacts as you wish.
You can create contacts in our app and later associate them with an existing iOS Contacts as well.
If you have the Pro Contacts Pack, you can do a CSV import of contacts from other apps into our app.