FYI - the landing page tells me nothing about what it is you're selling, and "Why PlanFlow" leads to "Access Denied". I don't want to give away my email if I've no idea what it is I'm signing up for.

Plus some bugs you might want to be aware of - the "Coming Soon" floating labels are pretty off-centre on the links, and the hamburger menu when the browser is in portrait is nearly unusable and splits the "Sign Up - Free" button in half. This is on Safari on a Mac.