Any chance you're looking at last year's results? I can see my 2021 results in extranet which were released on the 24th last year but not my 2022 results...
Seeing that everyone is having vastly different experiences, I'm just adding that when I log into my extranet account I see last year's results, a message that says "Your documents will be displayed below shortly. You will be notified once they are available." and a second line that says "To upload your document please click here to access your personal folder."
I did receive the e-mail saying that results were being released this week and that they would send info about accessing my extranet account, even though I already have one. Maybe they're having technical problems.