QoE Settings does not show nodes

Hello Guys,

I got a question about establishing QoE.

I watched some videos and red some PDFs about QoE and I am currently doing my first steps with QoE.

As i wanted to add a new server sensor and clicked on the button "add a new node" the next window did just show one node.

(As it does here:Overview of Quality of Experience Dashboard in SolarWinds NPM - YouTube at 2:42)

But when i click on settings -> manage nodes , there are many nodes already managed.

So my question is : What do I have to do in order that this Overview (like in the Video) shows me all nodes?

Thats what it looks like now:

Thanks for any help !