Thank you for reaching out. It does appear there was abuse of our subscription referral program. Due to this activity, the account has been flagged with a warning, and we have removed the referral credit. No further actions will be taken at this time. I appreciate your providing us this information.
Unauthorized secondary distribution of games purchased through Humble Bundle is a violation of our Terms of Service. Please note that future violations can lead to permanent deactivation of the account.
Thank you for your honesty in this situation and stay safe out there!