That is the same that I get when I enter my ext. IP address into the URL search.
However, I've just retried my ext. IP address with https:// in front of it and I got a more info link which gave the option of going onto the website anyway but not recommended and I landed on my router log in page, but there was a certificate alert on it.
Try that with your 192. etc and see if you get that option as well, but I would still contact Sky about this.