Erroneous excess Social Security tax
I'm being told to upgrade because I paid excess Social Security tax. Based on my research about excess social security tax, this is impossible, as I did not earn more than $132,900 in wages, or pay more than $7,960.80 in social security taxes. I have triple-checked all of my W2s/Box 4 withholdings.
See worksheet 3-1 in 2019 Publication 5050: https://www.irs.gov/pub/irs-pdf/p505.pdf
See @SusanY1's answer to this related question: https://ttlc.intuit.com/community/retirement/discussion/re-i-m-being-told-to-upgrade-because-my-spouse-paid-excess-social-security-i-calculated-the-per/01/1358107/highlight/true
And also @Opus 17 's answer to this related question: https://ttlc.intuit.com/community/taxes/discussion/turbo-tax-won-t-let-me-fill-a-free-edition-they-say-i-paid-excess-social-security-tax/00/1312997
Why is this update required?