引用Hi there, We’re writing to let you know about promotional credit that will be expiring on your account. As a reminder, promotional credit expires 12 months after it has been issued or redeemed. This includes referral sign-up credit, promotion codes you’ve entered, and credit issued by DigitalOcean staff. The following promo credits you have will expire on August 01, 2018 for your account ([email protected])[table=517.818px]Credit NameAmount RemainingIssue DatePromotional Credit from GitHub Student Developer Pack 50!$39.942017-07-22