IRS says I need to file form 8862 . TurboTax says I don't. Called for help, they run me thur said I was good got rejected again. 3 times rejected. 2019 last I had income

If the IRS wants the 8862 filled in then do so  or remove the EIC from the return.

 

https://ttlc.intuit.com/turbotax-support/en-us/help-article/rejected-tax-return/e-file-reject-f1040-164-01/L2s8cUYYO_US_en_US?uid=ldth3t1f

8862 is to claim certain credits after the IRS has disallowed them they include

1) earned income credit

2) child tax credit

3) refundable child tax credit

4) additional child tax credit

5) other dependent credit

6) American opportunities tax credit.

 

 

for the EIC disallowance could be any year after 1996 the others after 2015