I am not seeing the Options and settings > Options > Preview features and enable “Custom data connectors”. I am trying to add the Custom Data Connector > SiteImprove (Beta) See screen caps below.....
Nolanm94605 ,
Custom Connectors have been Generally Available at 30 Octorver 2018, please take a look at this blog.
You can check the new security settings under ‘Security’ in ‘Options as described in this article: https://docs.microsoft.com/en-us/power-bi/desktop-connector-extensibility.
Regards,
Lydia