Personal data gateway - install and configure ok, nothing showing up in the service

Hi

I installed the personal gateway on Windows Server 2012 R2. Sourcing data from SQL Server 2014 on the same server.

It asked me for the service PowerBI credentials, which I provided - success.
It then asked me for the Windows Authentication credentials - success.

When I go to the actual dataset in the service (Schedule Refresh), the gateway is missing.
The DIAHostService service is running in Local Services.

Any ideas why this isn't working in the PowerBI service?

Thanks,
Jason