Bathroom extractor fan has fallen off ceiling and refuses to be refixed! Any ideas, please?

[SnakeWitch]

So the extractor is dangling from the plasterboard ceiling. No more nails didn't work, sticky tabs didn't work and tap in plasterboard fixings didn't work either. I would be grateful for any suggestions, thanks.

[PigletJohn]

photo would help.

Have you got access above?

Was it formerly held on by screws into the ceiling? What happened to their holes?

Is it a plasterboard ceiling?

Is there a flexible or rigid duct in the ceiling?

[SnakeWitch]

So sorry I didn't respond, it has been a very busy few days! DH has fixed it now but thank you for your reply.