Volume Power Button APP
GO TO SETTINGS > SECURITY > DEVICE ADMINISTRATORS AND REMOVE THIS APP FROM THE DEVICE ADMINISTRATORS LIST IF YOU WANT TO UNINSTALL IT.
After that, you won't be able to install the program like you normally would.
If you're wondering why the app was initially listed as an administrator, it's because only programs with device administrators have the ability to turn on and off the screen.
Although you opted-in to this, it's likely that you didn't read the important information when the app requested this permission.
The long-term behavior of this app becomes uncertain if it is launched without the screen-off setting since it is susceptible to the operating system's whims regarding memory reclamation.
If you intend to use the app for extended periods of time, we advise that you use the "screen off in notification bar" feature.