You will want to make sure your card has been activated in order to access the funds after they are deposited. The funds are not deposited until the IRS actually issues the payment.
The following information is showing on the Green Dot website (https://www.greendot.com/how-it-works/add-money/tax-refund-center:(
Track your refund
Visit
irs.gov/refunds or call the IRS Refund Hotline at (800) 829-1954. Green Dot does not have any information on the status of your refund.
Additionally, please find a helpful FAQ regarding 'Where is my refund'?