Highly disappointing

Worked long enough for me to get my first free cup after buying 6; then it comes the second time around where Im trying to earn another free cup and when my barcode is scanned, I dont get my points. I logged off & signed back in, refreshed the app, deleted and reinstalled the app and still no points for the last two drinks I bought. Very upsetting. Dont know what happened to make it stop working.

Cappaccino Amor about 7-Eleven: Rewards & Shopping