Hi, I am preparing a non-filer return for a couple that only income they have is Social Security (SSA-1099). They have two great grandchildren that lived with them for 2020 and 2021 and they did not receive any of the recovery rebate credits for the kids. I am filing for 2020 and 2021 to get the recovery rebate credits, but I am just wondering if they qualify for the CTC since they have no earned income? Anyone? and thank you!