Hi Kor
Great to hear from you! Hope you enjoyed the holidays.
I'll be honest, I don't have any experience with OneDrive. But I would suspect a problem with the iOS OneDrive app, because Roastmaster doesn't really "do anything" with file transfers anymore.
In the old days, when Roastmaster exported a Database, it interacted directly with the cloud service APIs. I coded different methods for each service that it supported. Essentially, it did all the "hard work".
Apple has streamlined that process though, in recent iOS versions. Now, installed apps tell iOS that they can handle file transfers, and those are automatically available in Roastmaster. All Roastmaster does now is prepare the file, then pass it off to iOS, which passes it off in turn to that app.
I'm assuming you have the OneDrive app installed on your iPad and linked with your account, correct? If so, you should see a OneDrive icon appear when exporting a database. Do you see a list item with the words "Save to OneDrive"?
Some apps let themselves be "linked" to the iOS "Files" app. For those apps, you can choose "Save to Files", and choosing the app within the "Files" interface. Do you see that?
Maybe try doing a test using "Save to Files" and choosing an iCloud destination. Does that complete for you?
Let me know
Danny