Did you just recently move up to a higher AW Tier Map (from Tier 6 HARD to Tier 5 CHALLENGER) ?6 and below have portals that can follow to any other island, over and over. 1 person can actually do all 10 fights and full explore.5 and above do not. 1 fight only, then can only go to final end node.It's not even a “forward” only (like prior map's 3 mini-islands that look side-by-side but really have to go a certain “forward” direction). This now is only to end node no matter which island you did your 1 fight on,
Alliance member claimed option A was the end portal and he couldn't undo so he could not take any fight.