The system is set up to allow only one promo code per account.
If you have already entered a promo code and are looking to get more free Marketing Credits, share your promo code with friends and colleagues and earn Marketing Credit when they complete a trial.
Just click the Earn $10 button at the top of your screen (click your picture/initials on the mobile app to see this option), copy your referral code, and share it with your friends.
