How can I change my RM Excess Accumulation Worksheet in this software? I input one number incorrectly, but it's greyed out and I can't go back and edit it.

This is just a technical challenge, it has nothing to do with taxes. I had to input numbers there in my review, and one is incorrect. This incorrectly shows me as requiring to pay additional taxes, but I just input the number incorrectly. Unfortunately, it looks like the software is not permitting me from changing the number. Is my only solution to restart my whole tax form?