I got ahold of support to let them know there was a bug and couldn't finish the quest. However, they completed the quest for me I have no idea how that quest ends. Such a Bummer! all that hard work and they finished it for me. I have no Idea the story finish.
Hello. There is a known bug with this particular quest that we will be working to fix in the near future. In the meantime, you may try switching areas/realms to see if you can find a button that hasn't recently been used by another player. Outside of this you can contact our Customer Support for more assistance until we can get the bug fixed.