Hi Anthony -
We don't have plans right now to develop a native Apple Watch extension for Go Button, mainly because the built-in "Now Playing" app already works as a remote control for Go Button. "Now Playing" requires watchOS 4.0 or later and can be found in your watch dock, which is accessed by pressing the flat button on the side of your watch.
To enable support for "Now Playing", open the "Configure Remote Control" screen from the Go Button sidebar. Tap on your active remote control profile to edit it. Then scroll to the bottom of the screen, and make sure that the switch next to "Send Now Playing Info" is enabled. Exit the "Configure Remote Control" screen and open a show in Go Button. After your show is loaded, open "Now Playing" on your watch.
(Note that "Now Playing" can connect to more than one audio source. If it does not automatically select your Go Button device, you can tap the red back button in "Now Playing" to select it from the list of sources.)
Whenever Go Button is the frontmost audio app running on your device and a show is open in Show Mode, Go Button will send basic information about the currently selected cue to display on your watch, and it will receive remote control commands from "Now Playing". You can use the "Configure Remote Control" screen to customize the actions that Go Button performs for each of the remote control commands sent by "Now Playing".