They must sign up to Revolut, for the first time, using your unique referral link. (Someone who has previously signed up will not earn you a Reward.)
Signing up means completing the sign up process and passing our onboarding checks. If the invitee fails our onboarding checks, you will not be eligible for your Reward. For example, they might fail these checks because they do not meet our onboarding requirements.
They must top up their account from an external source (like a card top-up or transfer from another bank, not a transfer from another Revolut account).
They must order a physical card and make three card purchases of the required minimum amount. The three card purchases can be made using a virtual or physical card. The required minimum amounts vary by region (more information here). These must be genuine purchases (for example, card transactions to payment, gambling, gift card or currency exchange service providers, and money transfers are not valid).