How to get a F5 BIG-IP VE Developer Lab License

Here is what the CDW product list looks like. These do not resemble the titles that existed 4 years ago, which did not have parenthesis on the versions. Again, my impression is that F5 thinks these are upgrades while CDW thinks they are full licenses, and neither company wants to fix this problem when the root cause is discovered. At least, that's what happed with version (18). If anyone buys a (16) license at this point and succeeds in obtaining it, please post your experience here. I will try again later, if I can't get mine through my fed rep.