Hello Alex,
Thanks for your reply. Can you please confirm that you are using the latest version of Roon on both the Roon Remote (iPad) and the Roon Core? You can find out what version you are using on your iPad by navigating to Settings -> About (Right underneath “Keyboard Shortucts”). If it does not say “Roon Version 1.5 (Build 323)” then you are using an older version of Roon and it needs to be updated.
With that said, I assume you have tried this but if you haven’t yet please navigate to Settings -> Setup -> Clear Image Cache and select Clear Cache and Restart Now. If you are still having difficulties you might need to reinstall the Roon Application as another user has who experienced the same issue as you. If you go down the route of reinstalling the Roon application, make sure to create a backup of your database using the instructions provided here before reinstalling. Please let me know if any of those steps resolve the Album Art not showing up.
Thanks,
Noris