Whether it is working correctly or not it is useless by comparison with the met information available to US GA pilots.

I'm reasonably happy with the new site. I get the information I want for flying in the Highlands.
It's still much slower to load, and the accompanying isobar map is seldom (though I think it has sometimes been) , for 12 hours ahead of the main map. But I can get that by clicking the other charts link.
It's some time since I've had logon problems.

Apart from slow loading, I'm now very happy with new site. The predicted weather and isobar chart for the same time is good, with the 12 hour ahead available on the adjacent charts button.