There was a WhatsApp update 3 days ago. It worked until yesterday. This morning it failed again.
It seems they are working on it.
Let's wait and see....
For me it's not only WhatsApp, there are a lot of Apps stuck on the loading screen.
It broke last Friday ... came alive this weekend and now it is broken again.
I can't even use my Authenticator App or Spotify. I really am going bananas, there is so much you are used to do on your phone and than suddenly you feel totally crippled!
Just don't wanna give up on Windows Mobile, I love it so much.