Can I modify a software source code GNU GPL License v2 or later?

GPL License

[anthonyinit]

I bought a script from codecanyon script that is well-coded but there is one problem in the source code.

when you open the source code 70% of the code you can see this Item name.

Eg.

 /css/itemname-theme/productname-stlyle.css
/js/itemname-js/boostrap.js

The item name is the name of the item I purchased.
so on...

This is really bad and I don't want to advertise any product name or brand etc... so I contacted the author and told him that I don't like this product name being seen on my source code and I want to rename all the directories so and his answer was it is not possible to edit source code if you want you to need to pay extra / need extended license for it.

As I've seen GPL license is allowed to modify the code.

I'm no an expert on this so I hope someone here can give me some advice.

this is my license

https://www.question2answer.org/license.php

Thank you

[tangor]

In general we do not give legal advice for all the obvious reasons.

If you cannot come to an agreement with the code supplier, find a different one who will. That's just commonsense.

[anthonyinit]

Thank you for your reply and I understand what u mean. Anyways I did find the answer in Quora