Why is the IRS site telling my info is incorrect when i was checking on my status for my stimulus check?

[Whitejere045]

I didnt get my full stimulus and already filed my 2020 taxes, will I have to amend them?

[CatinaT1]

Are you referring to the first two stimulus payments or the third?  If you are referring to only the first two stimulus payments and and you did not claim the Recovery Rebate Credit, you will need to amend your 2020 return.

[MEGO57]

this did not help at all.