One of my backup sets has destination set to Secure Online Storage. This backup set has never been executed successfully. Whenever I run it, the status is displayed as running. But, nothing happens. Even, I leave my computer idle for days (not hours) to ensure no interference & full internet speed. The progress bar stuck at 0% & my internet logs support this progress status.
To ensure server uptime, I'm trying it for weeks... but I've never succeed.

What's going on? How to fix it?