Sounds like your diabetes monster is thinking in terms of carbohydrate exchanges rather than grams or in grams rather than exchanges.
Do you see “Ex.” or “g” immediately after your entry? If so, head to your settings and double check your carb settings (“Grams” or “Exchanges”).
First, go to 'More' located in your navigation bar at the bottom right-hand side of your screen. Then tap on 'Account & Settings'
Android:
Select the 'Therapy' tab at the middle of the top of your screen, scroll down and tap on 'Carbs unit.'
iOS:
Select 'Food' in the list of options. Then tap on 'Carbs unit'.
Then you can select what units you use for counting carbs and happily continue logging!