How do I earn Referral Score?

Here's how to earn Referral Score:

1. Click the 'Invite Friend' button under 'Referral' located at the top of each space.

2. In the pop-up window, you'll see your Referral Code and how many people have entered your referral code so far. 

3. Copy your Referral Code and share with others.

4. If the recipient of your code enters your code in the [Enter Referral Code] quest within the [Series Quests] in each space, you'll earn Referral Score.

Note that you CANNOT enter your own Referral Code into the quest.