Retirement tax questions

Thank you for your response. I received $1200 this morning. I did not file for 2018 or 2019 because my income was too low. I used the TurboTax Stimulus Registration tool, as I was advised to do. They use the submitted information to file a 1040. The 1040 was accepted on 4/5/2020. My children are under 17 and no one else has or can claim them.