bulb cancelled £50 referral fee from my account

can I ask why bulb has cancelled my £50 referral fee from my bank account when I’ve joined though a friend. Tansferwise has sent me an email telling me this after the money has been deposited to my bank.

As this is a public forum it may be best if you contact the Bulb team direct, their contact details can be found at: How to get in touch – Bulb