I would jump over to the Indie Hackers site and ask for feedback there. I'm sure it will spark a useful conversation.

From my quick survey of your marketing site, there's a lot of work that needs to be done to improve the UX on mobile. I would suggest working with a designer to improve the graphics and checking that the layout works on different browsers/OSes/breakpoints. Might be easiest just to start over with a premade template for the marketing site.