I can't remember how to make a master blueprint for treasure chests (issue: Can only use one at a time)

[DomusLudus]

Action only effecting last placed actor

You should move the “enable input” to the trigger enter and add a disable input when exiting the trigger and when the chest is opened. The last one was opened because you have put “enable input” in begin play so all the chests are added to the Input Stack and when you activate the event the last added chest was the first one of the Input Stack.

Maybe this is the solution