Fixed? Quite a few of us in our group are getting this error. Never experienced this until the latest update took place. Nothing to do with pc specs. Ours are well above recommended. No security software installed. Router has never been changed. ISP? All of a sudden they start blocking it? Out of the blue? Just that once or twice? Odd behaviour. I'd say if the ISP was going to block it, it would be permanent not intermittent.
There has been a raft of issues arising due to the last update. Prior to that, issues were fairly mundane in my opinion.
Now......its harder just to play the game.