I want to edit my HSA deduction number. But the Edit button won't show the editing section but only the promotion of upgrade to Deluxe. Where can I fix the number?

HSAs and form 8889 which reports on activity in your HSA are not supported by the Free Edition, but only TurboTax Deluxe and above. Hence to report on your HSA (e.g., edit your HSA deduction number) as required by the IRS, you will have to upgrade first.