[PS5] Forgotten Bounty: No Next Steps

There's no next step for my quest. I summoned Dannig. He said to place investigate and see what Gwen (?) was up to. Now there's nothing to do on the island. There's a detonator that doesn't seem to do anything. There's a bunch of markers on the map with modifiers to monsters. There's nothing that's interactable other than the Detonator and a few rotten logs.

Playing on PS5 Pro
Druid if that somehow helps

Have you go into your key binds and set a detonator/bomb placement key? It will be in the extra command bits not your actual skillgem moves

If you don’t have a bound move for it then you can’t proceed!

Edited to add: do this from your skill page like you would to bind a new skill gem and look at the extra options (zoom, portal, potion, in game context etc) I forget the actual words but stuff like that