I suppose the link did not help your situation.. It might not on a UEFI system.
I have not seen a screen with the indications you describe. But I have the impression it might be related to a activation issue, or a Microsoft account/store issue.
Just for information, are you using a Online Account to log in, or a Local account? If you click the network symbol, what happens?
Does it make any difference if you are connected to a network or not?