If you used the non-filer registration then you sent a zero tax return. The registration product was for people who did not have to file a 2018 or 2019 tax return. You won't be able to e-file your 2019 tax return. You will have to print and mail the 2019 tax return.
You can check on your stimulus payment with the IRS "Get My Payment" application. Please visit Get My Payment
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