Cant combine deals & McCafe rewards

Cant combine deals & McCafe rewards in the same transaction. I bought a McCafe drink with our order for 5 people but McD said I can only use one scan per order. It was either the $2 off or getting my first star for my McCafe purchase. The app should automatically recognize if there was a McCafe purchase made in the order and add it to the account.i would appreciate it if you looked into my account & added my first star for my McCafe purchase yesterday!!

Stacey L. about McDonald's, v5.2.2