I know this topic has been discussed previously where potential users have hit issues because their employers do not permit iCloud Drive on their Macbooks… and hence it is not possible to sync between IOS and MacOS.
This is an issue for me and is stopping me form fully embracing Drafts but I wonder if there is a solution lurking somewhere. I hasten to add I am not a Developer(!) but there are other apps I use that sync via iCloud using CloudKit as a transport mechanism only, but do not store files permanently in iCloud Drive. Most of the Apple apps do that for example and work fine in my setup.
As I understand it, Drafts also does not store files permanently in iCloud (I may be wrong but it appears that way), so maybe the application checking that iCloud Drive is enabled as part of the configuration steps is checking too deeply?
Just a thought and - as I say - not a Developer … just someone who is keen to embrace and pay for Drafts if I can get this final piece working !