I removed the log archive from your post because it's not safe to post that information publicly. It's better to send the log to our support team via tools > diagnostic menu and specify which errors you see while running your backup plans. The full diagnostic archive will also give us more info to troubleshoot the problem.

the same thing is happening to me Error occurred during backup: You are not authorized to perform selected operation. can you help with this?

This one is a permission problem. Make sure your cloud credentials have full access privileges and update them in the software. To receive more details on it it's better to contact our support team.

Thanks, Matt.
Nick told me that purchased maintenance has expired and "Otherwise, if you have any questions or concerns, please refer to our forum.".
What should I do?

online backup has stopped working - Can anyone know about how to fixed it..?

Do you see any errors or warnings?