What is the frequency of the real-time backup?

Usually it happens within a couple minutes.

The initial backup went fine, but since then, I've created a new file on the designated backup folder in my computer a few hours ago, and it still doesn't appear on the server. Also, when I enter editing of an existing task, are all the task details supposed to appear correctly? Although in the task list it appears as real-time type, when I click edit nothing is defined correctly (the "real-time backup" button is not green, the "to" date is today's date, the excludes I've defined are not there etc).

It seems the "to" date is wrong. You probably have edited "to" date accidentally. Please change it to a future date. The default date is set as 2099. You can also try to manually start the task see if it works.