Recently got a windows pop up after clicking on a sports stream. It was asking to allow firefox.exe through windows firewall. Is my computer in danger?

I did not click to allow it through the firefall. The firefox I was using was connecting to the internet fine. (Despite the pop up saying it was blocked on both private and public networks.) I can guess the video player app is being used in some kind of attack. The link I clicked on. https://streamed.pk/watch/carolina-panthers-vs-cleveland-browns-2261156/admin/1 Btw I googled this and saw others complaining about it but basically no info.