CALL TURBO TAX or type in the Help (?) box "Talk to a specialist" and you can set up a phone call with them. I only had to wait 15 minutes for them to call me. Or you can call [phone number removed] for product support - in this case this is a glitch in the software not tax advice so you shouldn't need to pay to upgrade the version of TT you are using. This was for the Turbo Tax Online version.
She verified my info and asked me to share my computer screen. She then walked me through the following steps:
On the left side of the Turbo Tax screen, CLICK on "Tools."
In the pop-up window CLICK on "Delete a form."
From the list provided, I CLICK "Schedule SE."
For me this did the trick. It reset my refund amount to the amount that had been displayed prior to typing a number in line 18 of the Schedule SE. Another reply here suggested deleting your whole 1040, but deleting only the SE preserved everything else on my taxes. If you have other relevant info on the SE, that still seems less work to re-fill out than the whole 1040.
I'm so relieved and glad TT actually called me and helped.
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