Don't understand why it doesn't work with this website. It might have something to do with the MCE formating. Or just the program in general - you know how it use to be when you would try to type in a certain word, like the word 'script', or the word 'declared' - the system couldn't manage to deal with it. It jumbled it up & made it have a different spelling. Or took it as a vulger word like 'moron'. The webmaster/techs presently seemed to have straightened out those funny quirks.
Opening up another window & then Copy & paste it there & it seemed to work, at least for me.
*EDIT* So, I put in a pdf file in a folder: That seems to have it come up now.