Carolyn Samit wrote:
Make sure your watch is AWAKE to receive messages.
Wake Apple Watch. Just raise your wrist. Apple Watch sleeps again when you lower your wrist. You can also wake Apple Watch by tapping the display or pressing the Digital Crown.
To clarify: Carolyn's reply is incorrect (in addition to not addressing your question).
It is not necessary for Apple Watch to be awake in order for it to receive messages. If incoming messages are not read upon receipt, notifications are saved in Notification Centre (accessed by swiping down on the watch face, when viewing the time). A red dot at the upper-centre of the watch face indicates when unread notifications are awaiting your attention.
I'm afraid I cannot presently offer a solution for your actual issue.