What TurboTax shows you is just an estimate based on the fact that many refunds are issued within 21 days of the return being accepted.
The IRS does not update TurboTax on the actual issue date of a specific refund.
If there is no record of your return at Where's my Refund or you are getting the message "You may not have entered your information correctly", an important factor can be if you are married filing jointly. Make sure you are using the Social Security Number for the name that appears first on the return. Keep in mind that once the IRS notifies TurboTax that your return was accepted we won't get any more information from them.
Here are some other common reasons why your refund is not showing at Where's My Refund:
https://ttlc.intuit.com/replies/4242575
While most refunds are issued within 21 days of the return being accepted (not when it was filed), sometimes there can be delays.
Please see the following information about contacting the IRS if it has been more than 21 days since acceptance:
https://ttlc.intuit.com/replies/3302084
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