Hyperlinks to pdf file not working

I hope someone will be able to help me. I have been using PDF converter online for awhile now and on some of my websites. I know how to use hyperlinks (I am a webdesiger). All of a sudden, my hyperlinks are not working on any NEW ones I create. I click on the link on the website and it comes up with Error 404, Page not found. I am using regular word documents.

The support team keeps instructing me on how to set up hyperlinks - I know how to do that.

Is anyone else having this problem?

Thanks!