The IRS does not allow extensions to be e-filed after May 17. There is nothing that TurboTax, or any other tax software company, can do about it. You have to file your extension by mail.
See the big yellow box at the top of the page at the link below on the IRS web site, which says the following.
Victims in FEMA Disaster Areas: Mail Your Request for an Extension of Time to File
To request an extension to file your federal taxes after May 17, 2021, print and mail Form 4868. . . We can’t process extension requests filed electronically after May 17, 2021.
Extension of Time To File Your Tax Return
