Well, why not calling it ROS v7 ALFA... Beta is a bug squashing and polishment stage... New features and configurations are implemented in alfa.At the moment there is none because configuration can and probably will change.
What exactly you were not able to set up?
Maybe its a problem with any of your devices! Using the same version and versions before with more than 100 Advertisement with no problem! Trying now there is no problem too!
Current is 3.20. And it's different from 3.2, people should finally learn that version numbers are something different than decimal numbers.