carnolar

It turns out I did beat Serra (I have 8 badges)... but there isn't anyone in Obsidia Ward for me to talk to. The team meteor grunts did however disappear from the maze in front of Radomuses gym but I don't know where to go now. I have played through the entire game and this is an alternate save file so don't worry about spoilers. i think i need to fight Luna in the Iolia Valley but I'm not sure if i have the proper key to enter the tree in the maze.

I've gotten into the area of the gym where Serra is supposed to be standing but there is no one there (El and Bennett aren't in the previous room either), and the Pokemon mart has already teleported to the front of Tanzan Mountain. I just defeated arceus/ditto and I couldn't find Addrien in front of the coral ward gym so i have no idea where I'm supposed to go...

I wasn't sure under which topic to post this and I don't know if this is a bug or I've missed some kind of trigger event, but Serra is not in the gym in Spinel town (and neither are Bennet or El). I went to the grand hall to ask the guy at the desk where to go and he said I have to challenge the Ice gym. Any thoughts on what I can do? I've been trying to trigger an event for a few hours but nothing is working.