did yuou file joint in 2018. the both of yout agi's is the same
if she filed separate the agi for her is from here return and the agi for you is from your return.
if the agi for both of you is correct, there's mot much you can do except check you 2018 transcript at the IRS website
https://www.irs.gov/
if the numbers are correct, you will have to paper file. OP's have also reported same problem
