Hi Sir William, yes the recycle bin is turned on. But I cannot figured out where the file is. I cannot see also the content of the recycle bin. According to the teacher who uploads it, its has been deleted a month ago. I tried also finding the file in the h5p repositories hoping that the file is there, but there's none. I already set the item lifetime and course lifetime in the recycle bin to 1 day.
By the way, I am not really sure if the file resides in the recycle bin.
Thank you Sir for the response.