"Earn 2.25% APY when you have up to $10,000 in your account. Amounts over $10,000 will earn 0.50% APY." suggests that you get 2.25% on a balance _up to_ $10,000

"Earn 2.25% APY when you have up to $10,000 in your account. Amounts over $10,000 will earn 0.50% APY." suggests that you get 2.25% on a balance _up to_ $10,000, not that that's the minimum for that rate.