If you are waiting for a Stimulus check, fill IRS form 3911. on top write EIP. Section 7 - Tax period write 2020.
Those who are abroad, noncitizen students abroad, everyone received a check. Those who are in the USA, are missing check.
I’m not, Spunky is.
This link is with mailing address
https://www.aarp.org/money/taxes/info-2020/how-to-find-missing-stimulus-payment.html
What to Do If the IRS Says You Got a Stimulus Check, but You Didn’t