Should I refund?

a user requests me to refund because he says he can’t modify the source code since the source code is not commented and he can’t understand it.
This is my item:

I’ve read the guidelines and I’m not obliged to give source code documentation.
Can some Envato man help me to answer?

No, do not lol.
He can hire you to do modifications if he wants.

No don’t.

You are not obliged to and to be honest if someone can’t modify source code without comments then there’s a good chance that standard commenting is not going to make much difference.

It sounds more like they would need a detailed tutorial highlighting each part of the code to have to change to achieve what they are after.

Thanks all! Ok. - refund policy

You should not refund.