After installation of the id-connector you get an empty api page
You have installed the id-connector with the manual
but after the installation you cannot access
You only get an empty page.
This is because, at the moment the UI of ID-Connector and Kelvin loads external resources (JS and CSS) from cdn.jsdelivr.net. so you have to allow cdn.jsdelivr.net on your proxy or firewall until Bug 56329 or Bug 56314 (kelvin-api) is fixed