It took me a second to work out why I'm turned off by this site but in large part it's the color scheme. You're rocking a color palette inspired by a wasp and it screams "danger danger"!
In spite of the fact you're appealing to tech savvy people, if you're handling money you have to appear as credible as a bank. There's absolutely no way a bank would appear like this and I don't trust you because of it. This is something you need to work on as a priority IMHO.
I strongly doubt a one page site with a call to action that only requests an email address is sufficient. What happens next? I have no idea. How do I get paid? No idea. Can I use this if I'm outside the US? -shrug- How do I pay you? I have absolutely no idea and I wouldn't dream of using this service if I had to use PayPal.
Also, you might consider offering a free trial, or if this isn't possible, do what Stripe does and offer a way to kick the tires with a dummy account. Give people the option to convert that into a live account.
There are other barriers to trust, including lack of contact information. The details here matter because I'm trusting you with money.
Also, why aren't you running all connections over HTTPS when you're asking for contact details?
In short, you're an escrow service that needs a lot of polish, attention to detail, and hints that people should trust you.
(Side note: I don't understand why your main site looks so incredibly different and polished, but this page looks like a rough first draft.)