When signing up for Switchit and creating your first digital card, the phone number entered must be the phone the app is stored. The phone number associated with your account is how the system identifies you. To ensure you have the most up-to-date version of the app, go to Settings and tap "Updates". The system update was uploaded to the Apple App Store 12/20/2016. If the problem persists, contact us at firstname.lastname@example.org. We are dedicated to offering you amazing support and we're happy to help.
Apple App Store Link: