I am having the same issue. I was playing an alt on CoA, and when i figured i’d check the que situation on TM, i got kicked and have sinve ben unable to log on to game server. That means i cant even change back to CoA and continue alting…fml.
Hope this gets sorted fast so i can get some gametime this evening.
*and for those who are getting in… did you just keep logging in untill you lucked out or what?
No logging in here. Managed to play about 2 hours ago but I could feel the lag getting worse and worse so seemed inevitable this might happen.
They had more servers in the past - they merged low populated servers. If peoples is coming back they will add more servers 
Stuck on logging into gameserver and getting error WOW51900127 - Grim Batol.
Same on Stormscale.
wow51900102 for me too since 4 hour ago. this is for any server.
Same here.
Relax…
Soon blizz will compensate a put new transmog or Mounts to buy…
Was altabed, game crushed or something, and bam - cant connect. Multi-dollar company.
Don’t worry, It’s not you, it’s everyone. Thousands of posts on forums, twitter and WoW reddit.
They will refund or offer something I expect. It’s obvious there would be outcry if they didn’t make some sort of gesture.
i expect blizzard return at least 3 days of game time cause i couldnt play
the game for these 3 days 
And now i am in queue, 1003. Great.
I got in, but only to Turalyon realm, didn’t in the other realms where I have higher-level chars.
Have not been able to get into Draenor today.
Login is dead for Burning Legion
Where is blizzard game support guys ?
Stuck for 3 hours!!!