Customers of Morrisons are expressing frustration as discounts from the More loyalty card are not being applied at checkout. As the supermarket promotes significant discounts on Christmas food, many shoppers have encountered errors while trying to redeem these offers. Complaints on social media highlight a specific error message appearing at self-checkouts, and the Morrisons website is also experiencing problems, showing a ‘502 bad gateway’ error on several pages. The supermarket has yet to respond to inquiries regarding the situation.