Social Security Beneficiaries: You Might Need to Act Now to Get Your Stimulus Check

Most Social Security recipients will be paid automatically, but there are some big exceptions.

https://www.fool.com/investing/2020/04/13/some-social-security-beneficiaries-need-to-act-now.aspx

If the IRS is getting your information from your Social Security earnings statement (SSA Form 1099) or your railroad benefits statement, there's a chance your details won't have been loaded into the system yet.

As of 4/21/2020

Note: If you receive an SSA or RRB Form 1099 or SSI or VA benefits, your information is not yet available in this application.