What is a Backup?

When you are planning where you spend from, you can now choose a Backup for every Jar you create. A Backup is handy for when you don’t have enough money in the Jar that’s linked to your card to cover the whole amount. For example - you are buying something that costs £10 and your card is linked to a Groceries Jar, which has a balance of £5. Use a Backup called, say, Extra Groceries Money, and the remaining £5 will come from here.
The default backup source is always your Wallet. If you want to change this, tap the Jar you want to set a Backup for, then on the three dots in the top right corner and activate “Use a backup payment source” . Then tap on Backup source to select your backup option.