We don't have the lastest version.
What we did was disable the TLS 1.0 and 1.1 from windows server and that seems to have fixed the issue. We did not receive the alert from AWS the following month.
FYI, not sure if Home Server 2011 has TLS1.2 support so you may have to upgrade anyways.

Google disabling TLS 1.0 on windows server and it has some good documentation on how to do it.

pushing outside of normal operating times. I'll open a ticket.
My cbbackup.db is over 70GB which it has been for some time but this issue just started a couple of days ago.

Plans that are executing in parallel halts until purge is working.
This is what I see in their logs while it waits for the other plan's purge to complete

[CL] [10] WARN - Generating chunks is idle for 15 minutes.....

I have version 7.1 running on Windows Server 2019 and I also received the same email from AWS.
Is this a Cloudberry setting or a Windows Server setting?