Cloud Sync Task PULL Successfully completes with 0 Bytes Transferred

[K_REY_C]

I'm needing to restore an off-site backup to Backblaze b2 created in FreeNAS (running TrueNAS-12.0-RELEASE now). I've created a new dataset to pull into, setup the cloud sync task (as below). The credential seems to be working correctly as it correctly lists the available buckets once selected. I've set it to pull a copy.

The issue I'm having is that when running the task is that it very quickly reports a Successful completion, but no data is downloaded (per the logs and checking the dataset itself).

Log below:

2021/03/29 08:46:56 INFO : Local file system at /mnt/media4/b2_backup_files_main_pull: Waiting for checks to finish
2021/03/29 08:46:56 INFO : Local file system at /mnt/media4/b2_backup_files_main_pull: Waiting for transfers to finish
2021/03/29 08:46:56 INFO :
Transferred: 0 / 0 Bytes, -, 0 Bytes/s, ETA -
Elapsed time: 0.0s

This does use remote and filename encryption, but I've added the password and salt as indicated lower in the menu. Any ideas on what I should be doing differently here or what I'm overlooking? Many thanks!