File transfer?

I have calibre on my computer.  I want my books stored on the cloud so added that as another library within my calibre but when I try to add the books to the library that is stored on MY Cloud it won’t let me and if it does, I can only see my book name it won’t open it???

What do I need to do to fix this?

Hi pgun3, welcome to the Community. See if the following link helps.