Hi Tom,
It looks to me that there is an issue with the install in particular the modular_inputs required to function aren't installed/running properly. Verify in Settings > Data Inputs that the Local Inputs are installed and enabled:
Splunk Cloud Gateway
Splunk Cloud Gateway Subscription Processor
Splunk Cloud Gateway Mobilie Alerts TTL
Splunk Cloud Gateway Role Based Notification Manager
Splunk Cloud Gateway Metrics Collector
Splunk Cloud Gateway Subscription Clean Up
Other debugging things to try are listed in our trouble shooting guide here:
https://docs.splunk.com/Documentation/Gateway/latest/Registration/TroubleshootGateway
Additionally check out the "Cloud Gateway Status Dashboard" via S&R dashboards.
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