I'm guessing because I don't use GRLevel2. I do use GRLevel3 with free data from NWS. However, I think that you have to subscribe to a data service to get the Level 2 data. Take a look at AllisonHouse.
Good point. There's a lot of useful information in the GRLevelX owner forums (which are separate from the public forums) and the owner forums are easily overlooked by folks just getting started with the programs.
Dave, there is a completely separate set of forums for registered users of the GRLevelX programs. Once you register for the program, you can get access to the "owner" forums. In there, you'll find forums for GR2Analyst.