I am sorry..
I just install the script and test it.
I document every steps in writing in order to make an instruction or guide on how to install and use the software.
I don't even use the software in production.
Client sent me a script, I install and use it in every possible scenarios and make documentation, that's all.
I did not ask if my client have the valid license for it because it is unrelated to my job.
edit: In the future, I will delete the content of public_html as soon as I am done with a job.
usually the files stays there for a while in between jobs, but never actually use it in production state.
Please tell me if it's OK with you.
Thank you for understanding.
Luky.