Hi, Before provide any steps for troublesshooting let me tell something: Google Support is the worst service ever !!!!! 1. I chated 3 hours with Google Support with the same boring steps and he couldn't fix my issue. 2. I called Google Support and tried for 30 minutes to explain what is Android Device Manager. He even asked me for the address !!!! WTF ??? So here is the problem: I have 1 phone (Motorola Moto G) and 1 tablet (Lenovo Tab 2) and if I wanna find one of them on Android Device Manager it says no active devices. From Google Play on the web I can install apps remotly to my devices without a problem. And also the location history doesn't work for both devices. I have all the options enabled the location services, GPS, location history is on enabled, android device manager is also enabled from settings. I tried to factory reset both devices nothing, delete cache nothing, disable and enable google play services nothing. Can somebody please help me ?