A user after you posted that using the TurboTax phone app worked. You could try opening your 2024 return and re-saving it, then try Amending the resaved return. It could be that the Amend function is not yet available, since this is the middle of the 2025 filing season.
There's no rush to Amend your return; it takes up to 12 weeks to process, either by Efile or Mail, and the IRS puts these on the back burner until the current tax season concludes. If you decide to mail, you only need the 1040X and any documents related to changes you made (W-2, 1099's).
@captaincustard
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
