Deductions & credits

I'm  using TT 2019 standard (not free) edition. I  said yes I paid alimony, entered the amount, specified  ex's ssn, specified a divorce date in 2013, it says I'm  not eligible  to deduct alimony. IRS says even if I have to take standard deduction,  I  should be able to deduct alimony paid. What's  the deal?