I mean that when I go to iCloud Drive Options in System Preferences (Mac), it shows that the Desktop and Documents folders (also) store their contents in iCloud Drive. This means the items kept there are accessible on iOS using Files app – and a few third party apps.
Just to be clear, I do not, and have never attempted to, put DT databases in the Documents folder. Until DT3, I put them in their own folder inside my User folder, but then moved them to the Databases folder that DT3 automatically set up. Basically a sideways move.
The point I was trying to make above was that aside from anything that might be going on with DT3, it seems to me that iCloud is being damned slow at the moment. Even Mac to iCloud to Mac sync of the Documents folder is not happening very reliably or quickly for me. And I’m finding it a bit easier to deal with things if I take DT3 out of the equation for the moment. Maybe iCloud slowness has nothing to do with the out-of-sync databases that I was getting, but I don’t have time to troubleshoot it at the moment. I just mention it in case it should help with troubleshooting – either for Devontech or another user. Cheers!