To find out other admins, simply click the "User List" on the link bar in Algobox, and in user group select "admin". Then click search, which gives you all the administrators.
Go to the edit menu of an object, select "Materials" and the bouncy factor is called "Restitution". The highest on the sliding bar is 1, but you can select the digit indicator and type in the value. 0.500 is at default, 0 is not bouncy at all, and 2 is if an object collides with it, it will never lose energy.
For me, if I cross it lightly, i am able to cross. Otherwise, it explodes. It causes so much of these repeated message to appear in my console/logfile -
- WARNING - Direct solver solution was non-finite; trying to fix...
Umm... I don't know... umm... Practice? Skill? Creativity? I don't know really. But keep on practicing to make good scenes, and soon you can become as good as I am (though I am not that very good. I know only 1/32 of what Xray or s_noonan knows, and probably only 1/500 of what Kilinich knows. if you click the "Popular" link on the top bar, Kilinich's scenes dominate the first page!)
Oh, by the way, seeing you say you can't thyme script, probably you can't use this, because you don't know how to apply it to a square shaped figure.
So, I surely am lost.
You can always ask some other more talented thyme scripters, like s_noonan or Xray to help you.