Are these separate issues you are having?
Yes
First issue: watching live TV via the Sky Sports website.
I have rectified that. It was the snipping tool that caused the error.
Second issue: unable to view the devices you have registered to use the Sky Sports website
Can you let me know the browser you are using? Can you ensure this is up to date and clear the cache and cookies too.
Chrome, Edge, Internet Explorer all of them. All up to date. I am loathe to clear cache and cookies as that will use up one of my Virgin media devices, so I will have a third chrome (which I can't distinguish) and just one device change left.