Protected cell in itr3 software downloaded for govt-it e-filing website

I am an NRI and I downloaded ITR-3 XML software from IT E-Filing website.

In Part-A General form, there is a question "In case of non-resident, is there a Permanent Establishment (PE) in India?"

This question is on a "protected cell" and i am unable to enter "No" to this question.

I think the cell should get "un-protected" when i enter my residential status as non-resident but this does not happen.

How do I solve this problem?