Unable to open the app

[Zeeshan Kazi]

My WhatsApp tile is turned light and I cannot open the app can anyone tell me why is this happening

 

[Harrie-S]

That happens to more people after a while it turns on again or just uninstall it and reinstall it if you can not wait. If you switched backup on you don't loss anything.

 

[Zeeshan Kazi]

How much do I have to wait????