I've been fighting with Asus support for several months now dealing with the same issue. My M8E came with only the trial version. They are now claiming that they have never provided the retail version of the software (which is a complete lie, as they have done this for the past 5 years). When I pointed out that they advertise the 1-year license, they shot me back a copy of the disclaimer that says that bundled software is subject to change without notice. Apparently, that also means that they will continue to advertise software that they have no intention of providing.
While Asus has the best hardware development team out there, their customer support is the absolute worst. Honestly, I'm amazed that they are able to keep customers at all with the way they treat complaints.