I just had another preparer point out that the Missouri individual software allows electronic payment this year (2021).  I haven't used it yet, but if you check the boxes it doesn't give an error.  Anybody used this option this year in the Missouri individual software?  

Since it's late in the year and I have clients with big payments to make I don't want to create headaches for myself if this option doesn't actually work in the software.  Tired, paranoid and gun shy at this point in the season.