How I can find clean files to be able to send it here to be nulled? I'm asking because I don't know.... To find clean files you need to get from the owner, but to do that first you need to purchase, so doesn't make sense... And all you find on internet are already nulled..
Most of nulled scripts contain malicious code. Personally, I scan each file and browse the code. But for a newbie it is generally impossible to discover the hidden code. So after installation, begin the nightmare. Sometimes, all the server is affected (on shared hosting, CPU overload, ....).
It's the reason why we ask for untouched scripts.