It seems that right now, the "locate pdf" button doesn't always work on the iPad app. I've found that for some publisher's websites (e.g. Wiley), the locate pdf button brings you to a page where you can then click "download pdf" and the pdf is indeed downloaded and added to the library. However, this does not happen for publishers like ACS. Instead, the locate pdf button brings you to the article page, where you can click a "pdf" button and open the pdf, but the ipad app does not actually download it to the library (and you also can't annotate). Could this please be fixed? The only workaround right now is to pre-download everything in the desktop app or web app on a computer, which makes the ipad app much less user-friendly.