The issue is not with Tutbotax but the IRS. Since you filed jointly in 2022 the AGI you should be using for 2023 for both of you is the amount on the joint return. There is no reason for the IRS to have different AGIs for 2022 if you originally file jointly. If you first filed separately and then amended to a joint return. then the proper AGI would be off the separate returns. One other thing to check is that her SSN is correct. You can use the joint return AGI for yourself and 0 for your spouse, but it's likely to be rejected. Sometimes there's an issue with the IRS database which would require you to file by mail.
but first, I suggest, checking the iRS transcript of your 2022 return
https://sa.www4.irs.gov/sso/?resumePath=%2Fas%2FMawfXhkY41%2Fresume%2Fas%2Fauthorization.ping&allowI...
