Make sure the person you invited has completed all of these steps before the deadline for your campaign.
For the previously running campaign, a friend you invited had to complete all steps before 15th March 2021.
For the currently ongoing campaign, the following steps need to be completed before 12th April:
These card payments do not have to be completed; they can be in pending state. If your friend has performed all the above steps, a reward should already be assigned to your Revolut account.