Beat The GMAT a GMAT & MBA community

Hello Master Gmat,
I had registered for the 2 month math course on Feb 6th, but didn't get to use it much as I was v. busy with work. I did use it somewhat during the last week but now being a weekend I would like to spend some more time on it. However, I get the message: "You have reached a cap of 5 hours for this week. Please try tomorrow!"
I have some queries:
How many hours can we use it per week?
Is this element (cap) in the Verbal section also?
Why is there a cap?
Is there any way to revise any of the previous questions I've attempted?

Thanking you in advance!
unlucky