I have recently signed up for the GitHub Education Pack, which offers a $100 promo code for DigitalOcean. However, according to their site, it could take a couple weeks to hear back from GitHub. Can I create an account with DigitalOcean, and pay for the first month, and then apply the promo code to the account I receive it? I notice that on their site it says that you can easily apply promo codes “as a new user.” Does this mean that current users who have entered a credit card/PayPal account will not be able to use the promo code?

Thanks!