Costco app's digital membership card used to work off-line for entry and checkout, as it uses a scannable QR code that does not require constant Internet. However, Costco app failed to function at all today. It so happened that Costco app (iOS) was updated just today. HELP!!!
Also, please consider installing in-store Wi-Fi access at Costco warehouses. Most, if not all, of Costco's competitors (i.e., Walmart, Loblaws, Maxi, Metro, Super C, etc.) have offered Wi-Fi access for many years.
