I agree with Jess on the headline. Notice how the examples she suggested make it about the reader rather than just the product? That’s what you want. People don’t care about products. They care about what the products will do for them.
I know you’re trying to go with a minimalist approach, but in this case, I think a bit more content would help make it a bit more clear and compelling. For example, you have a callout “Get paid faster,” but it’s not clear exactly how the product will do that. Just seeing when payments are due doesn’t mean they’ll necessary be paid any sooner.
The scenarios is another example. I don’t know what you mean by test your next business decisions. And honestly, I wouldn’t call out features that aren’t available yet anyway. That can cause people to delay signing up until it is ready. Highlight what the product does have, not what’s missing.
The CTA button could stand out more. I would put it in a color that contrasts with the background. It wouldn’t hurt to get a button up above that fold as well.
Finally, I like the before and after comparison. It would be even more effective if you play that up more and make it stand out visually. Maybe you could add an image with all the disparate sources and have a line on the screen that reveals the before image if you slide one way and the after image if you slide it the other way, kind of like this: https://codepen.io/tutsplus/pen/bWKMoK but with completely different images.
Best of luck!