DyaPress Premium is not yet available for download, but you can purchase yearly licence now to support its development and have 50% discount compared to a single licence purchase. The licence token you are buying can be activated at any time, so when the Premium will be available the licence token may be used at this moment.
The first version of DyaPress Premium is planed to be available by end of june 2019. It is currently powering this website.
Token purchase is temporally unavailable.