VMA Bug Report. Fa-Nuit-Hen does not accept my vma completion quest

Chelister

I have just completed my 3rd vma. I collected the loot from the chest (luckily I received an infused Lightening staff) and entered the portal to exit the last stage of the arena.
A friend called me and I went to talk to him. When I came back I was logged out. I logged in back and found myself just by the big entrance to vma (the big oblivion like portal). I opened the map and saw an icon which was located just behind me, in Wrothgar. I went there, but nothing
I entered back into the arena location via the big portal and found the two NPCs which give out the quest. When opening the map there is an icon just on the two NPCs saying (Veteran Maelstorm Area. Talk to Fa-Nuit-Hen).

However, when I talk to her, she doesn't have the option to hand in the quest. Instead, she says 'That's a relief. I really thought that might be the arena that would break you. But you did it. I then click the option which says "What can you tell me about the next arena". She says "it's called the Vale of the Surreal". But I just completed it and have the loot on me.
When I try to enter the vma portal to the arena it simply loads the screen as if I am entering and the disappears and nothing happens, I still stand in front of it

Now, I cannot hand in the vma completion quest as she starts talking about the next area (which is stage 9, the last one)
I am afraid that something can happen to my loot
Anybody experienced this before?

@ZOS_GinaBruno

Shadzilla

Can confirm. I haven't done vma in almost a year though, quit after that elusive sharp inferno drop on my 250th run. If I recall correctly if you leave the vma instance after completing the quest you cannot turn it in for the reward. I always used to travel to a friend or guildmate after getting the chest, rendering me unable to turn the quest in next time I came back. Not sure all the details on how the bug works, but from my perspective you have to turn the quest in right after you complete it.