still no fix to my invasions not showing up - here is the response i got.
I'm Specialist Game Master Zicneiross, but you can just call me Zic.

It's nice to meet you! I'm terribly sorry to hear about the issues you've come to face with the Demon Invasions, and the World Quests they spawn not showing up for your Monk. This is the brand new content that just came with 7.2 so I totally understand if this has created a bit of frustration for you, since you aren't able to participate while this issue is happening.
We do have a couple reports from other player's suffering from the same issue as you've described. It seems fairly rare at this point, but we are collecting all the reports we receive so that our QA team can investigate the situation and report their findings over to our Devs who can then try and create a fix for it. To be a little more transparent here, the situation here is a bug with your particular character, not a technical issue with your client. It's awesome to hear that you troublehooted the issue a bit on your own, with some really good steps, but I'm afraid those steps can't resolve this particular problem. I even logged into the character from my computer here and could not see the World Quests either. I could see the icon on the map notifying me of the Invasion going on in Stormheim right now, but you still had all the normal World Quests available in that Zone, not the ones for the Invasion. Those World Quests 'should' swap out for special Invasion world quests, but the bug is making it so that that's not happening on your character.
I'm afraid that us in Customer Support do not have a true way to resolve this bug on your character. I did tinker around with a few things which I thought could maybe help out, but sadly I couldn't get it working. That being said, I did send up a report for your character so that it will be tracked with all the others suffering from the same issue.
I know this issue has probably taken more of your time than you'd like, but we would also really appreciate it if you could send up a bug report yourself as well. Using the Bug Forums would be ideal, that way your report is public facing to the community, with a chance to have one of our Devs or Community Managers chime in with any updates on the issue:
https://us.battle.net/forums/en/wow/1012660/
Once again I'm terribly sorry for the inconvenience with this my friend. I hope that QA and Dev can work together to roll out a fix for this soon, since it is effecting many people. I guess on the bright side, these Invasions were removed from the criteria for the new Pathfinder achievement to fly. While it sucks not being able to do the Invasions right now, at least it won't hinder your ability to fly in the Broken Isles.
If there's anything else we can look into for you in the meantime, please let us know