Refund changed after filing and acceptance (no unemployment)

I filed my taxes on 1/20/21 using TurboTax Premier. On 2/17/21, I received notice that my return was rejected. Following TurboTax’s advice, I updated the software and resubmitted my return. On 2/17/21, I received a notice that my return was accepted. My return showed a refund. Today, I checked the status using TurboTax. The program once again updated , and now shows a different, higher refund.  I have received no notification from either TurboTax or the IRS. How is this handled? What refund will I get?

I do not have any unemployment income.