When you sign up with a referral link, the code applies automatically.

You can apply it as following

Find the My settings block on the Settings page. If it's not there, you can't change the code.

You can paste the referral (tracking) code into the corresponding field and click Apply:

To check if you (or your referral) have correctly applied the referral code you can check the same box on the Settings page:

Important! After you apply the referral code, you can change it only ONCE before you pay!

Please note - Referral codes and Promo codes are different

Check here how to use a promo code.

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