Explorer is on a non-revenue repo after her dry dock - her first sailing is 3/12 (6 day) which is different than the poster's sailing (8 day). When there's a break in service like that, the app sometimes takes a while to populate correct info.
You can use an app or perhaps, on a desktop/laptop, save the image of the barcode and upload to website which decodes for you, like: Barcode Reader. Free Online Web Application (inliteresearch.com)
I see them listed but in typical RCI IT fashion, they are messed up by showing the kids menu. Look at the next sailing (3/12) for the menu for first six days - look at any other 8 day sailing (on another ship) for full menu.
Only buy the card after you ask on board how many punches per whatever you drink - the savings from the card are only meaningful if you get single punch drinks.