prezes - so I then got a message saying the cert is invalid. But then, after a few retires and what nots, it works.
Have they forgotten to update the certificate in one of the nodes?
And if I use digicert…
So looks like they had a certificate expiring on the 22nd, which tallies up with when I started seeing these issues (see my post on the 23rd). They renewed the cert, and, at a guess, they might not have fully updated it across the board.