Guild Wars 2

So i bought Heart of Thorns cd-key on G2A, everything went fint, the key worked and it says on my account that Heart of Thorns is active, i then installed the game through the site but i still dont have the expansion benefits even thought it says on my account its active. I made a ticket but the guy answering me only really said that i shouldnt have bought a key through G2a, but the thing is that the key works fine. anyone tried this?

What is exotic exactly? is it a term of some of the best gear in the game or something?

Thank you all for the replies, everything helped me ^^
Atm im trying to complete every dungeon story mode, before doing any exp paths. But i am having trouble finding anyone who wanna do story mode :P

- i got another question i write here, instead of making a new thread, if anyone wanna tell me.

- Crafting… ive read alot of threads about crafting being useless, and atm i am lvl’ing tailor, (level 150). should i stop wasting money on crafting stuff. or is it worth it, when i reach level 400? can i craft good gear in level 400?

What is the differents between story and exploration mode?
and ty for answerøs

As i said in the title, I am new to gw2(gw2 is the first mmo i play). I bought it 7 days ago, and i have now gotten my first character, a necromancer, to level 80. I’m not interested in pvp, only pve(dungeons). But i have no clue which dungeons to play, and what gear to get for pve.

I completed arah story mode today, and it was the first time i was in a dungeon, we completed it, and now im lost, because there are 8-9 dungeons as far as i know, with 3 paths, And i have no idea which to take. So…

- What dungeons/path should i go for the most, if i want the most loot/gold
- What gear should i go after for pve.. my necromancer build is alot bleeding damage, i use scepter/dagger, and staff.