Eonian

Im trying to setup Endpoint security for android and followed all the steps, im now at the point of 'activate device administrator' when i select activate it says 'because another app is displaying on top of these options, settings is unable to respond' Ive gone into the apps settings and turned off every app (other than eset) that writes over other apps, restarted the phone and it still says the same. How can i get it to install?