I can receive notifications on my watch from every app installed on my phone, except for Message+.
I do not use other messaging apps on my phone or my watch.
Everything worked fine until I uninstalled Verizon Messages from my watch.
Now: I no longer get notifications on my watch for SMS/MMS (even though it is set in the Wear OS App to send the notifications).
I no longer can install Verizon Messages on my watch. It states that "Your device isn't compatible with this version."
As stated previously: I have a Samsung Note 8, running Android OS 7.1.1 and a Moto 360 Sport running Android Wear 2.17.