I can’t import Dorico files into iPad

I’ve not been able to open any files from cloud based platforms. Error box reads unable to open file. Any ideas?

Make sure that the projects have been fully downloaded to your device before you try to open them in Dorico. With iCloud Drive, Dorico should be able to automatically download the files when you tell it to open them, but with third-party cloud storage providers, it can’t, so make sure you have downloaded the files to your iPad before you try to open them.