Hello @Saragan!
I’m not experience with the OnlineSubsystem, but this function seems to simply call events associated to an actor:
https://docs.unrealengine.com/en-US/…ent/index.html
It is provided as an interface so that any class implementing this interface will have to provide its concrete behavior:
Engine\Plugins\Online\OnlineSubsystem\Source\Public\Interfaces\OnlineEventsInterface.h
Have you checked inside the item with your UniqueID to see if that has an event called CollectPowerup?
If that doesn’t exist, maybe you could create one yourself just to check if everything works as expected?
If you need help here, maybe these links might be helpful:
https://forums.unrealengine.com/deve…lained-finally
https://docs.unrealengine.com/en-US/…tom/index.html
Hope that helps!