Why is Nine Exchange Email not displaying on my huawei watch?

[AC Question]

I recently bought a huawei watch. I pair it with a Samsung Note 5 handphone. I am trying to get exchange email to work on my huawei watch by downloading "nine" app. However, I can see the app on my phone but not on my watch. Could anyone advise? I am ok to try other apps as well that can access to exchange email.