Since you bought ALK2 through a third party retailer you might not have a user account on our website. Please find your product key, which was sent to you by the retailer when you bought it and use it to activate the Windows version (every ALK2 full license can be activated on up to 5 devices - PC or mac).
To download the Windows version please click here
About the tablet mode - zenAud.io ALK2 was made with touch screens in mind and can easily be used without a keyboard. There will be a tutorial about using a touch screen coming out shortly (there is one thing to note: if you want to draw loops, you must first select the red/green pencil, double click inside the arrangement and drag. If you don't double click and just drag, ALK2 will move the arrangement view as the default option).
Please note: in the current windows version (2.0.0) there seems to be a bug where ALK2 does not open when tablet mode is on. However, ALK2 works fine if you open the program when tablet mode is off and then turn it on. This is a small issue that I'm sure we will be able to fix very soon.