Samsung Gear S r750 not working

I just bought Samsung Gear S r750 in a charity for UW.

Watch connecting with the help of Bluetooth. But, it is not displaying the time . It keep on flickers with wallpaper and watch face. I'm not able to disable the wallpaper. Most of the times not able to go to apps.

able to restart, poweroff, factory reset.

Also i see message when i try to choose a watch face "unable to load data, tap to retry"

Since this is 1st gen watch, samsung not able to help me out here.

Firmware verison on this r750aucu2apc1

Please help me out..Plzzzzzzzzzz