Deductions & credits

I just went ahead and entered the medical expenses myself on Turbotax desktop . I also entered other sections like stock sales and income from a Sch k-1. Sure enough, I went back to Deductions and Credits/Medical Expenses like this

I hit the Update button, and sure enough, I was able to change any figure I wanted to. Try clearing cache and ccokies again. 

sign out and sign back into the program again. @DaveF 1006 You may also try live support if all this still doesn't help.