Question #1
Yes, it would be violating the license agreement. It would be akin to getting the latest UBB files from a friend. All your downloads under a license# should be used ONLY for that license# installation.
Question #2
I guess I don't quite understand. It sounds like you are saying you own a UBB and have it on dimhorizon.com and you want to buy a second license and initially install it on gaming.dimhorizon.com There is nothing wrong with that, as long as you have a license for EACH installation. There is nothing wrong with moving your UBB at a later date either, just as long as you take down the previous location's installation. However, I do believe IP doesn't mind if you have a closed-off board setup for testing purposes ONLY with the actual in-production board running elsewhere.