Happy to report the reinstall IN A SUBDIRECTORY was the answer to my problem! I'm proof, Erik that the INSTALLATION instructions should be followed to the letter! I'd been installing Revive on its own setup/domain, at the root level. Looking forward to using this tool!
I got it working. Here's what I did:
Working as administrator account, go to Plugins
Find "Delivery Limitations Plugin" - Click on details
Find "Client Delivery Limitation Plugin" - click on settings
Check the box beside "Extract the viewer's operating system and web browser information using phpSniff" to select it and save changes.
Now, go back to the banner you don't want to show to mobile devices.
Go to "delivery options"
Find "delivery limitation" - choose "client - useragent" and "add"
For "Client - Useragent" choose "regex does not match"
In the field below it, add the devices/browsers etc. that you want to exclude.
Example:
Android|iPhone|iPad|iPod|Mobile|kindle|Nexus|Opera Mini|IEMobile|BlackBerry|webOS
Click "Save Changes" and it should show the banner to desktops only.
There could be a better way, but this is working for me.
Hope this is correct and it helps someone.