Thanks, Matt. That's disappointing, but thanks so much for getting back to me.

Thank you, Matt. I've submitted the logs as requested.

Note that after submitting the logs, I received two e-mails. First was an e-mail delivery failure notification, then next was a "ticket submitted" confirmation. The delivery failure states the following:

----------------------------------------------
multipart/related

---------------------------------------------------------------------

--000000000000c5479705839a6454
Content-Type: multipart/alternative; boundary="000000000000c5479a05839a6455"

--000000000000c5479a05839a6455
Content-Type: text/plain; charset="UTF-8"

** Message not delivered **

There was a problem delivering your message to diagnostic-log-recipientsatcloudberrylabdotcom . See the technical details below.

Learn more here: https://support.google.com/a/answer/168383

The response was:

Your email to group diagnostic-log-recipientsatcloudberrylabdotcom was rejected due to spam classification.

The owner of the group can choose to enable message moderation instead of bouncing these emails.

More information can be found here: https://support.google.com/a/answer/168383.

--000000000000c5479a05839a6455

Amazon does not care about the folder structure, it only cares about the file type

Ah, OK, wonderful to know - thank you!

the free version doesn't support encryption so I'm not sure what it's doing

I'm on the 15-day demo, which I believe is more richly featured than the free version.

Hello, Matt.

Thanks for that tip; all of my backups were "stuck" in "Advanced" mode (Simple and Custom were disabled options). I've just now discovered that this is because I had the Ransomware Protection feature enabled. Would be a lot friendlier if this was explained on-screen somewhere.

Thanks!