Seems to happen when I am already on the site, then it stops working.
So I try to reload, but it won't open. 😞
And I tried several times. So I gave it about an hour and it hasn't happened since. But you'll remember that it's been a real problem at times in the past, so I was getting worried.
Until EarlG explaimed it's a firewall issue that resolves itself, my heart would stop each time the screen went blank with an error message.