You need to own 20 Spets to get a referral code.
Only new players with no Spet can enter a referral code. You can only submit a code of 1 referrer and cannot undo it.
There will be missions in the table below. When the user completes a mission, both the referred person and the referrer can receive the rewards. A task can only be done once.
The gift will be directly sent to your in-game mail.