The same here, tried all those steps, but still after some seconds the wheel stop spinning and still no backups:
- can you run a database-only backup?
- how about a files-only backup? (create a new schedule if you don’t want to edit a current one)
- If not, try to exclude your /wp-content/uploads folder, then run a manual backup. Does this work? If so, we know the size of your backup is probably hanging up your server.
- If you can, try disabling all other plugins, and switch to a default theme if possible as plugin conflicts can occur. Does that help?