I would suggest that you install Tony Fleisher’s (@tony.fleisher’s) excellent Z-Wave Mesh Details app:
[BETA] A Z-Wave Mesh Tool [C7 and 2.2.4+ Only]
It can often give insights into which devices are causing issues.
It can be installed manually or, preferably, via Dominic Meglio’s (@dman2306’s) excellent Hubitat Package Manager:
[BETA] Hubitat Package Manager
And welcome! Sorry things aren’t going well for you.
