Retirement tax questions

I’m having the same issue with IRA contribution.
I have no entry on box 13, and I am not covered by a work retirement plan, but when I enter an IRA contribution Turbo tax is telling me I am over the income limit and NOT calculating the deduction.
How can this be corrected?  If there something that needs to be unchecked or adjusted, please advise where. thank you! 
@dmertz @kashblack1953 @MinhT1