We cannot tell WHAT you did. There is not a "non-filer" portal for 2020 tax returns. The only way to file a 2020 tax return is to actually prepare a Form 1040 and file it. What exactly did you do on the IRS site? Did you use one of the free filing sites to prepare a Form 1040? That is not the same thing as using a "non-filer" site like they had for 2019. There is literally NO "non-filer" portal site to use for 2020 just for getting a stimulus check. We are a bit mystified and trying to figure out what you did.
So if you filed a 2020 Form 1040 but neglected to use the recovery rebate credit to get the stimulus money for your child, the only way to get it now is to amend the incorrect Form 1040 you filed. You have to prepare a 1040X in order to do that. I do not know if the free filing site you used will let you do that----what site did you use? If the site does not provide a way for you to do that you might have to fill out the paper form by hand and mail it in. Do you have a copy of the tax return you filed?
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
