I disagree; it uses a fraction of the available screen size (optimized for mobile?), the font is small, and worse, it's grey-on-white; the contrast is too low.
I also did a bamboozle; turns out the profile on the linked page here is not actually the demo, but just an image / screenshot on a landing page. Didn't really clock that it was a landing page; maybe link directly to the example and update the landing page to not start with a product screenshot, but with the marketing blurb instead (Disclaimer: I'm not a designer, but I've seen other product landing pages that use large screenshots to highlight segments of the product along with short descriptions of the feature)