pdfs not uploading or viewable

they are not viewable at all

Could you elaborate on what you mean by “not viewable”?

when I upload them, there is no preview in the media library. when I try to add them to a post, nothing happens

there is no preview in the media library

Can you see any icon associated with the file in the Media Library? Do you see any messages on upload?

no. can you google hangout to help?

I have tried everything and client has to have multi page pdfs on website. please help?!