I’m not sure here, but are you using the CenarioVR app for the Go to access you content? Go (ha!) to the store on your Oculus device and download the CenarioVR App, and then load it that way. Selecting the hotspots should be with the controller and should work flawlessly.
If I missed the boat here and you are already using the App, let me know. The Go is a device we use quite often around here.