Restore a deleted class

QUESTION
Yesterday I deleted a class out of my thatquiz account, and then
realized that all of the tests I had created for that class were
deleted as well. I was wondering if there was any way to restore the
quizzes online?

ANSWER
1. Click the "New class" link
2. Click the "Import" button
3. Choose the first option "I want to restore a class which I
previously deleted"
4. Choose the class to restore.
5. Click "Import"

On having to enter your password every time.

QUESTION
Is there an option to click where I don't have to enter my username
and password every single time I go to the site?

ANSWER
If you use the Firefox browser at home, the web browser can remember
the username and password for you:
http://support.mozilla.org/en-US/kb/password-manager-remember-delete-change-passwords
Be careful not to set this up on a school or other public computer.