It sounds like you're having trouble e-filing your Washington state tax refund due to the Working Families Tax Credit (WFTC) in TurboTax.
Here's some steps to help resolve this concern:
Verify Eligibility: Confirm that you meet all eligibility requirements for the WFTC. You can check the detailed eligibility criteria here
Check for Errors: Ensure all information is correctly entered, especially your Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN), and other personal details.
TurboTax Integration: TurboTax now integrates the Washington State WFTC, allowing eligible taxpayers to file for it directly within their TurboTax account.