On scheduled backup failure due Error Code 1 and then set up causes endless loop

I set up Comodo to backup on a schedule and to backup immediately if the schedule is missed. The scheduled differential backup of user files failed. I am using version 3.0.171317.130.

I am writing, not about the backup failure, but the difficulty in working on the problem. Every time I cancel the backup, it restarts immediately before I can open the edit function to try to find the problem. At this point the only option I see is to uninstall/reinstall the software in order to work on the problem.

Open regedit
Go to HKEY_LOCAL_MACHINE\SOFTWARE\ComodoGroup\ComodoBackup\ScheduleList and delet this key.
This will remove all your scheduled jobs.