How can I restore business card contacts in case they were lost?
In order to solve the issue, please try to tap Search icon in the upper right corner of the screen: are any missing cards present in other groups? If not, please submit a support ticket and send us the following information:
1. Have you turned on the synchronization?
How do I synchronize my business cards in Business Card Reader application?
2. Did you make backups?
How to save a backup copy of the Cardholder from BCR for iOS?
3. What could have caused the issue? Have you done any updates prior to it on your iPhone?