Solved
I mistakenly filled in a roth 401k amount, and now I can't remove it. Help!
If you mistakenly added your Roth 401k in the IRA section, go to:
Federal Taxes > Deductions & Credits
Scroll down to Retirement and Investments and then Show More
Edit/Revisit Traditional and Roth IRA Contributions
Delete the IRA contribution (trash can icon)
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