This Turbo Tax FAQ will provide more information on how to fix your rejected extension.
How do I fix my rejected extension?
https://ttlc.intuit.com/replies/4552370
This Turbo Tax FAQ will show you how to file an extension.
How do I file an IRS extension (Form 4868) in TurboTax Online?
https://ttlc.intuit.com/replies/3301811
