online preparation and e-filing for 2023 are now closed. you must buy a desktop version of the 2023 app
https://turbotax.intuit.com/personal-taxes/past-years-products/ to finish your return. forget about the extension. It's no longer valid. There will be no penalties for filing late if you are due a refund
check system requirements here
https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-system-requirements/minimum-syst...
