Business Use Percentage for Daycare

The Home Office Percentage (Business Use Percentage) for my home daycare is not being calculated corrected by Turbo Tax Home and Business.  I use 1400 sq ft of my 2800 sq ft home for the daycare.  I use my home 10 hours a day, 5 days per week for the day care.  In 2020, the daycare was not in operation for 116 days.  The Home Office Percentage should be calculated as follows : 366 days - 116 days = 250 days in which my home operated as daycare  ; 250 days x 10 hours/ day = 2500 hours that my home operated as a daycare in 2020. 

Total hours for 2020 = 366 days x 24 hours/day = 8784 hours.  2500 hours/8784 hours = 28.46% x 1400/2800 = 14.23%  However, Turbo Tax comes up with a home Office Percentage of  8.2%.  When I entered the correct information on the actual Form 8829, I got a review error saying I could not e-file with overridden information on that form.  How can this be corrected.  How can I report this problem directly to Turbo Tax.  I followed the directions given in the reply initially-Turbo Tax software is not calculating the percentage properly.