For some reason this problem now seems to have cleared up by itself? I can log in and play now without problems. I assume it must have been something their end on the server perhaps?

Same issue here. Tried as many different fixes as i could google. Re-installed game. Re-Installed Battleye. Changed Battleye service permissions level. Ran diagnostics on router, Ran ping tests, verified game files several times in steam, removed "battleye" folder and battleye files and then re-verified files to get 10 files replaced. Tried different servers, tried setting battleye service to manual and forcing it to run. Nothing makes any difference... This really is a game breaking bug.. we can't even test!