Once you’ve accrued more than US$25 in royalties on Adobe Stock, you can request a payout as long as the following criteria is met:
You've got a validated tax form on file in your account.
At least 45 days have passed since your first Adobe Stock sale. (You can make subsequent payment requests when you reach the US$25 threshold again).
You've got a valid PayPal, Payoneer, or Skrill account available to receive funds.
If so, there could be a rounding issue in the payout amount. If it's only $24.955 for instance, you'll have to wait for the next sale before the payout button is no longer grayed out.