A backup failure can be recovered by doing a shut down and unplugging.
Sounds like you might have something else going on. I would start a new topic. Please read the READ FIRST post, and included the requested info in your new topic.
Z-Wave Issues For partial or total loss of Z-Wave control (radio seems dead), before doing anything else please shut down the hub from settings and unplug for 30 seconds, then re-plug to boot back up. This will allow the radios to fully power down and restart. A regular reboot only restarts the platform and not the radio hardware.
Confirm that hub's Z-Wave regional radio frequency matches that of your device. Check hub's region on Z-Wave Details page to ensure that is set to your local region (E.G. EU - 868.4 MHz, 869.85 MHz for European countries).
Hubitat Docs: Z-Wave Details Hubitat Docs: How to Troubleshoot Z-Wave
How is Hub being powered? Supplied power block or other (explain)
PoE power (with splitter) is known to cause major Z-Wave issues on the C-8 hub.
See this post for detailed write up on PoE testing: PoE and the C8
Provide screenshots showing entire Z-Wave details Page
Click the Refresh Statistics button (and Refresh the page) first
Hub should be running for at least 12hrs without reboot, and state how long in your post (you can find uptime on Logs > Device Stats)
Provide screenshot of Z-Wave Topology Map (red/blue squares)
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