Sentora Backup Doesn't Seem to Work

[americanninja]

Thanks for posting replies guys. So am I experiencing something I shouldn't be? I can understand a backup having issues due to size or something when I am trying to run it, but in this case I am not actually getting a chance to even try to run it. The pop up window opens and only loads the information as shown in the screenshot. Now size appears and no backup button appears (which I assume should be displayed).

So I can't even start the backup.

I am using ubuntu 14.04 with DigitalOcean and I am using the latest Chrome browser.