Autofocus on barcodes not working in Wal Mart app Samsung Galaxy Luna j1

A

AC Question

I have been attempting to use the Wal Mart app on my Samsung Galaxy Luna j1 phone. The camera won't Autofocus in the app. Works in other apps great, but Wal Mart won't Autofocus to take a picture of the barcodes at all. Uninstalled and reinstalled the app 2 times.