Problem with this outdated mod

There is this (Outdated)Appear Offline{working}{patch 4.18} and it allows you to appear offline. but there is a problem.
This thread is now closed so i can not post there, but how the hell do you stop its function??? I reinstalled the game again and still cant appear online again, the creator had no instructions on how to reappear online. I Want to stop its function or whatever it does help pls

Did you try repairing the client?

Well, I did repair the client, but it still was not working. I assume the problems with a certain file in /C drive, one unrelated to game files.