Yes, you are correct, you cannot take the credit. However, your parents could potentially take one of the education credits or tuition and fees deduction, if eligible.
You mentioned you were using Series EE bonds. Please check whose name and social security number are on the Series EE bonds. Only that person should report this. Also, this income should be earmarked for higher education expenses for a tax break. Please see this article where TurboTax Expert HelenC12 shares some screenshots. EE Savings Bonds Used for Tuition.
Keep in mind is that education expenses that are allowed to be paid with the 529 money are not always qualified education expenses for an education credit.
Specifically, room and board doesn't count as a qualified education expense toward an education credit. Since college tuition for the year is usually well beyond the $4,000 of qualified education expenses allowed for a $2,500 credit, this does not matter unless a scholarship clears out nearly all education expenses.
Click these articles for additional, pertinent details:
The Lowdown on Education Tax Breaks
What education tax credits are available?
What are examples of education expenses?
