Welcome to the community. The console should be on and ready before APEX is connected. Having APEX connected before the console is on could create an issue like this but resetting the console should fix it.
Are there any icons at the top of Manager or is it only the controller icon that's missing?
In the meantime, we can check if the controller is authenticating using direct connection, this is needed for your mouse and keyboard to work later. To do this, please remove the hub and then disconnect and reconnect APEX to the console with the controller directly connected to APEX while watching APEX's startup light sequence. Do you see 4 green lights during this sequence? For reference the startup light sequence should look similar to this:
red, green, blue
red
green, green, green, green
red
If you do not see 4 green lights at startup and you have spare data cables it may help to test these spare cables with the controller.