My stimulus was sent to a old card that I moved have how do I fix this problem?

 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

You can contact your card services and order you a new card.