.intercommunication
folder just uploaded or renamed (previously using other name)?
If that's the case can you try refreshing the list on the screen before requesting ZIP download to see if it helps?
Regarding your iDrive bucket. What region is in? (or what's the endpoint? - region is inside the hostname).
Is versioning enabled for this bucket in the iDrive settings?
Is versioning enabled for this bucket in the S3Drive profile settings?
Any hints much appreciated ! (edited)