Technical support (for this moment) is provided free of charge by e-mail: hpl2d@horsepowerlab.com.
Please feel free to ask any questions.
There is also a mailing list -- Hpl2d News, it is used now mainly for announcements of "Horsepower Lab 2D" updates. To subscribe for this mailing list send an (empty) e-mail to hpl2d-news-subscribe@horsepowerlab.com.