Guild Wars 2

My other characters have not reached that point, so I cannot accurately compare, unfortunately. However, I did do the same thing for them as this character (stop LW1 or LW2, start HoT, return to LW1 or LW2), and it was fine. I did that for chapter one of LW2.

So I was online Guild Wars 2 during the events of Living World Season 2, so it is unlocked in my journal. I had begun “Echoes of the Past”, but then quit it in favour of “Heart of Thorns” to get to Verdant Brink. Now, it says I need to purchase “Echoes of the Past” to play it. Is this a bug? It was free when I began. And, on my other characters, if I quit a story and start a new one, then quit that story and restart a new story, everything is fine and unlocked.

Please help. I do not want to pay 400 gems for this story just to understand LW2 for HoT.

(Tl;dr: I have LW2 unlocked my journal. I was one a mission, quit, began HoT, quit, and can no longer complete the original mission because I now need to unlock it.)