Argus Quest Line Bug After Changing Faction

[rere11]

Bug description:
Couple days ago i changed my druid from alliance to horde. when im still in alliance i've already done the argus quest line(Into the Night), and managed to move to argus. but then after i transfered my character the argus quest line pop again at my druid, then i re do it. But after i report the quest to lady liadrin(The Hand of Fate) there's no more quest given to me. now there's no argus portal at krassus for my druid. Is there any solution for this?(MAIN PROBLEM)

and this quest(In the Blink of an Eye) also pop again, and i cant finishied this quest also, because i've done this when im still in alliance, so the ogrimmar portal which lead to old dalaran does not work, so i dont know, if this quest has connection with the problem above or not.(SECOND PROBLEM)

Btw, i can get to Vindicaar by asking my WL friend to summon me there...

Thanks.

Proof:
https://imgur.com/RJ7s4RS
https://imgur.com/LJMLwUl
https://imgur.com/1UFi29u
https://imgur.com/fHQNbpD (Krokuun Vindicaar)
https://imgur.com/Ok8P99x (Antoran Vindicaar)
https://imgur.com/JyjgXx7 (Mac'Aree Vindicaar)