Challenge Mote Question
Yes, you can only enable the challenge mote on repeats of the same character.
You also have to complete the entire chapter – unlocking the first achievement in the panel – and use that same character when going through (or go through the entire chapter first if you want to use another character).
The achievements were designed for goals to do when replaying. Unfortunately – intentional or not – this means that switching characters does not count.
Stop treating GW2 as a single story. Each Season and expansion should be their own story.
As far as I know, for the Challenge Motes to appear, you must have first completed the episode and then replay that episode on the same character that has the episode completed (or any character that has completed the episode) – it is not an account-wide unlock for the motes to appear.
They will be small will-o-wisps that are either at the start of the instance, or just before the section that turns into the challenge mode.
If you are having trouble finding the mote’s, I recommend looking over Dulfy’s website for some guides.
I finished the chapter and that was already enough, though I had already did it before with the same character, I guess it was before the deployment of the challenge mote in the game, thank you nonetheless!