Deductions & credits

I am itemizing deductions. When we follow those steps above, it does not take us to the "Charitable Cash Contributions under Cares Act screen" as the steps suggest. Instead it wraps up that section.

 

Then, when I try to file, it says there is an error - and whether I leave 10b as zero (as it should be), blank or $300, it will not let me file. Have tried more than a dozen times and it's a loop.

 

The error says 10b "should be blank," and after I make it blank and save, the messages changes to say 10b "cannot be blank."