Based on your income for the year, it would appear that you are correct, and would qualify for the full $1,400 third stimulus.
You may need to reach out to the IRS for an explanation. Be sure you are truly interacting with the IRS. They do not initiate contact via email, text message or social media.
For more information, see: Questions and Answers about the Third Economic Impact Payments — Topic E: Requesting My Payment
More details about the third round of Economic Impact Payments | Internal Revenue Service
@ChrissyZ
To check if the calculation is correct, verify that Box 4 of Form W-2 is Box 3 * 6.2% and Box 6 of Form W-2 is Box 5 * 1.45%.
It would appear that you are correct, that the system is holding on to initial entries. It is very useful for you to be sure to log out completely and close the browser window. Use a Windows PC with Windows 10 and an incognito Chrome browser to open your return.
Then, delete Form W-2 as @ReneeM7122 described at Tax Tools.
Re-enter it by returning to the Jobs(W-2) section. The shortcut: Enter W2 in the search box. Select the Jump to link in the search results.
@mrmikegap
