suggestions:
be sure your type the address EXACTLY as it is on your tax return.
birth date - be sure to use leading zeros where necessary. April should be '04' and not '4'
if you are filing married-joint, try your spouse's information.
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
