Turbotax Deluxe 2023 will not let me choose itemized deductions

Program is locked into standardized deduction no matter what I do.  Already exceeded the $13.850 standard (Single) deduction I added another 50k of bogus mortgage interest ...still no change.   ALSO:  Program refuses manual input of selecting itemized deductions on schedule A line 18.   I have confirmed I have the Deluxe version in the "about" menu.   What's the problem here?!