Thanks for spreading the grüum love!
Providing your friends first order has been placed correctly through your referral link, they will get £5 off their first order, and you will automatically get £5 credit applied to your account - to use against your next order.
Referral credit can be used against subscription orders, if the total after the credit has been applied is less that £5, delivery charges will apply.
If you would like us to apply the referral credit to your subscription, please contact us - support@gruum.com