>> All feedback is highly appreciated, no matter how brutal.
You should really get a native English speaker to proofread and correct the website. The content itself is fine but there are so many spelling & grammar errors in the text that it really starts to detract, and it honestly affected my perception of the quality of your software in a bad way.
Also not a big fan of the long-scroll style landing page in general, but that seems to be the flavor of the day now. I think some structure (index, menu) would make it a lot easier to navigate to the relevant information, right now reading top to bottom I had no idea what kind of other information could/would/should have been lower down the page.