Has this been occurring the whole time since including those two Z-wave nodes in the panel?
If not, roughly when did this start? Did it coincide with any firmware update?
Are the malfunctions at roughly the same time every day? What interval do they return based on the timestamps?
It looks like the last rediscovery date for those is in 2023. For Z-wave offline malfunctions I would first recommend running a network rediscovery in most cases.