The "Amend using TurboTax Online" link isn't working. I've tried Chrome, Safari, and Edge. I've deleted my browsing history and cache. I've also disabled extensions.

[DoninGA]

A 2023 tax return or earlier cannot be amended using the online editions.

See this TurboTax support FAQ for amending a prior year tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...