Samsung J5 (SM-J500H) FRP Reset easy solution here:
Tolls: Only miracle box and usb cable.
1: Attach the phone with pc with help of usb cable.
2: Open the miracle box software and click the option (FRP Reset).
3: Scan the port through scan option in the software.
4: Hit the start button and wait until frp reset done.
You can see in the following picture also.