I have Lightroom on a Macbook Air and I've downloaded the Lr app onto my iPad mini. I'm signed in on both, but the photo collections in Lightroom the Macbook do not appear on my iPad. Adobe Help gives the advice below, but there is no Sync Icon next to any of the collections in Lightroom on my Macbook. Does this mean that Adobe Help is out of date and Adobe have stopped using these icons, or does it mean there's something wrong with my desktop version of Lightroom?
You can also right click an existing Collection, and click Sync With Lightroom Mobile from the context menu
Open Lightroom on Desktop and go to preferences - Lightroom mobile ans make sure you are signed in.
Also make sure that you are signed into Creative cloud application and file sync is on.
Thank you for the fast reply. When I checked the Creative Cloud app I discovered it had become corrupted - wouldn't open. So I deleted it and re-downloaded the app. When I'd re-installed it, it told me I hadn't yet downloaded Photoshop or Lightroom yet (even though I'd been using the CC versions on subscription since last month.) So I re-downloaded them via the Creative Cloud app and that solved the problem. Now the Sync Icons have appeared in Lightroom and it's syncing photos with my iPad. Problem solved!
Many thanks for your help.