Lost library

I have just started using endnote for iPad (I used endnote over 10 years ago and just found the iPad version when searching for a referencing system to use on iPad) and downloaded a few PDFs and made a few of them references, including annotating and highlighting a couple. I needed to change the iPad I was using and so logged in on a different device but neither my new library nor my downloads appear. Can I find them again? Help appreciated!