I dont see options when I click download all I get is one installation http://aquacomputer.de/software.html why have they made what was a simple, pleasurable user experience into something that is now frustrating

so I just have a simple fan controller which I have been using for many years, I use aquasuite to manage fan speeds and have a simple thermocouple sensor used as a crude ambient temp measurement device and now after upgrading I need to buy a licence key? What the hell is going on? fwiw I have a Aqua Computer Aquaero 5 LT USB Fan-Controller