Download the -PlugGodz.Apk to your android device.
Open -PlugGodz.Apk app file using a your devices file manager app. after opening it should go to your sercurity settings scroll till you get to unknown sources and check the box.
(while opening the -PlugGodz.apk file if it does not automatically go to security settings use step 3 first. then go back to step 2.)
Go into devices settings>More>Security. Scroll down till you see unknown sources and check the box.
(then repeat step 2.)