All the jobs for all the VMs are not there-they seem liked they were wiped out. When clicking on the left inventory no jobs shows on the right pane. Previously created jobs won't run. After running a job the reslts are not found in job logs including Failed, Successful or canceled tasks.
There was a change inside your ESX(i) infrastructure, when the jobs is edited, the vRanger can't find virtual center. Most likely the virtual center was rebuild and although it is the same name and same user is used to access the UUID's don't match.
The job has to be recreated to reflect the ESX infrastructure change.