It's likely what *HtBlack said. For more information you best contact the Help Desk In the future please see our Need Help? thread when you need help with dA, it will redirect you to the right place immediately
If after a month for your friend it popped up, probably it was because the sub they had BEFORE and ongoing was an anonymous gift, and when that expired and yours came to replace it your name appeared for it. Probably, same goes for you. it will appear.