https://www.irs.gov/newsroom/irs-monthly-child-tax-credit-payments-begin
https://www.sbtpg.com/child-tax-credit-payment-info/
According to the IRS if your return, even an amended, is pending (ie showing only as received) you will not receive the advance child tax credit payments. Go to topic Q B 12 as of June 30th there were 35 million US income tax returns that had not been processed and estimated only 3% of phone calls were being answered. Verify that here
