How do I enter a referral code?

When signing up for the Merryfield app, a prompt will appear, asking if you'd like to enter a referral code (note, codes are case-sensitive!):

If you’ve already signed up, a referral code is no longer able to be entered.

Even if a link is used to download the app, the referral code may need to be manually entered. The points for entering a referral code will appear in the My Earnings after the very first receipt you successfully submit.