If the taxpayer is married, you are not allowed to file a Single.

Maybe you can enter "NRA" for the spouse's name to make it work???  The 1040 Instructions say that you can e-file, but the last I heard ProSeries was not able to do it (but maybe you could disable error-checking to see if that works).

https://www.irs.gov/instructions/i1040gi#en_US_2022_publink10002597