I'm trying to create a flow with a connection to a on-premise SharePoint site using a gateway. The problem is that when my site address does not show up in the Site Address pull-down of the "When item is Created" SharePoint trigger.
The Gateway is shared with me with 'Can use' permissions.
However, no gateways show up when I select Data -> Gateways

Yet the gateway showed up when I created a connection

And the connection status shows Connected even though the Gateway field just keeps showing Loading...

And the site doesn't appear in the Site Address drop-down list...


I think I'm just missing one small detail. Any suggestions?