I upgraded hosting posts are there but plugins uninstalled

What happens when you active the plugins? Have you contacted your host? (And what host is that?)

When I install and activate plugin, I found all data is there.
Hose name is Dream Host

So the site is working now?

No Sir,
I have PDF files with 3D flip book plugin, those are showing but not fetching as it says page not found error.
But the page exits on the same location,

Please provide a link to a page on your site where we can see this. Thanks. Note: Your link will be public and we will not later remove it.