been is a past participle! Besides, present perfect seems appropriate. It's commonly used to discuss events in the past relating to 'now'. Past perfect would

been is a past participle! Besides, present perfect seems appropriate. It's commonly used to discuss events in the past relating to 'now'. Past perfect wouldn't make sense, as past of what past? And past simple, focusing on a finished, closed event, when this even doesn't seem 'over' - at least from the perspective of some.