I was under the impression you had resolved your errors from your comment here, I apologise for not seeing your most recent reply to Blince’s post.
We have to run through the standard client-side solutions with each player that reports this. Sometimes successful, sometimes not. Players experience these errors for various reasons, and unfortunately there’s no one-size-fits-all solution (as much as I wish there was!).
Ultimately, however, this is a client-side issue. May I ask which country you’re playing from?