Ive tried on several occasions to redeem my free cup with many different sizes and varieties of drinks (both hot and cold) to no avail. The app is a blatant waste of yours as well as the clerks time scanning it.
On a side note, the store locator is consistently more than 500 miles off of my current location making it utterly useless.
The that does nothing at all. about 7-Eleven: Rewards & Shopping, v2.0.1