Check the IRS website and update your bank information if necessary.
AGI is line 7 on your 2018 return and line 8B on your 2019 return. Refund is line 21a of the 2019 tax return. and line 20a for 2018
https://www.irs.gov/coronavirus/economic-impact-payments
if the IRS tried to direct deposit to an account that was closed, they will follow up with a paper check
