Whatsapp not working...

I'm using a microsoft 640xl ,my whatsapp is not working,when I try to open it ,screen shows loading and suddenly crashes and goes to home screen.. I've tried all things like soft reset, re-installation around 7 to 8 times, Reboot , removing SD card. My phone's version: 1703 and OS Build : 10.0.15063.909
please help me...

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