Hi all. Been doing some detective work. I found out how to upgrade Jungledisk Desktop (not workgroup) to the latest version from about 2 years ago. It supports TLS 1.2 so it should at least fix my problem for a while. I have to do the procedure on all my PC's. If you need it, here is the procedure for updates. I checked my Jungledisk settings and they appear to be the same as before. I'm currently running a Jungledisk backup to Amazon S3 and it seems to be working. Even though Cyber Fortress doesn't seem to be marketing to individuals, their tech support was very helpful. See below for the procedure.
May your bits be stable and your interfaces be fast.

Ron
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Go to:
You will find this phone number for support which forwards to another number:
1-888-573-8649
You may discuss your situation with a human if you wish.
Upgrade procedure:
Go to:
Login with your jungledisk email and password. Click link to go to the control panel.
Click download software.
As of Jungledisk Desktop 3.21 all TLS is 1.2 as far as I know.
Go to the desktop section. Download your software.
For me it's win 64 ver 3.34.1.
Copy Jungledisk desktop software existing folder to a backup folder.
Run Jungledisk desktop monitor.
Go to configuration, enter password if necessary.
Turn on check box to show advanced settings if relevant.
Expand online disk drive for this pc.
Expand network drive.
Expand legacy backup (if relevant)
Expand my backup (or whatever's relevant).
Click on my backup (or whatever's relevant).
To the right click export backup job configuration.
Select a destination folder.
Cancel out of configuration.
Close desktop monitor window.
Close desktop monitor from system tray by right click and exit.
Run jungle disk 3.34.1 installer from the folder you downloaded it to.
Install to same folder that 3.16 (or whatever you have) was in.
In my case, it failed with this error:
Visual c++ 2015 - 2019 Redistributable (x64) required:
Get the latest version here:
Go download that file and save it in a folder, run virus scan on it, and run it.
Run jungle disk 3.34.1 installer from the folder you downloaded it to.
Install to same folder that 3.16 (or whatever you have) was in.
Reboot.
Jungledisk desktop should be ready to run at version 3.34.1 with TLS 1.2 support. You may wish to check your settings to make sure all were imported properly.
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Following is a copy of a letter from tech support which explains further.
Hello,
Thanks for calling Cyber Fortress Support!
Today, you called to know if the latest version of Jungle Disk Desktop (version 3.34.1) supports TLS 1.2 since Amazon is now requiring all TLS protocols to run 1.2 for all AWS API endpoints. After reviewing your installation report, all machines are still running version 3.16. Jungle Disk Desktop 3.21 began supporting TLS 1.2 only and you may find this in this information in the Release Notes in the Control Panel. You may download the latest version of Jungle Disk Desktop 3.34.1 in the Jungle Disk Downloads page in the Control Panel.
If you have any other questions, please feel free to contact us again and we'll be happy to help
Data Security Technician
cyberfortress.com