Deductions & credits

Just so you understand the issue, after I enter $250 for the teacher deduction, I get this message:

 

"We've run the numbers, and unfortunately you don't qualify for the teacher expenses deduction this year."

 

Then I click:

 

Why don't I qualify for this deduction?

 

And I get this:

 

"Earlier you told us you have $0 in teacher (educator) expenses, so there's nothing to deduct. You can go back and enter a different amount or keep going."

 

But I din't enter $0.  I entered $250 like I always do.