The original developer designed that license check not only to get paid but also to protect you – the end user – from tampered copies. When you remove that check, you are not hacking the system; you are inviting the system to hack you.
Understanding the demand helps illuminate the problem. Common motivations include: nulled android app source code patched
A computer science student used nulled Android source code for a "Attendance Management App" as their final year project. They submitted the APK to their professor. Unknown to them, the nulled code contained a module that used the phone’s microphone to record ambient audio whenever the screen was on. The professor reported it. The university expelled the student and referred the case to cybercrime authorities. The student claimed ignorance, but the code had clear comments in Russian instructing where to change the upload server. The original developer designed that license check not
Patched: