My first impression of the homepage is that the graphics are a little all over the place (in terms of consistency, not layout). Your logo has a pretty slick look to it, while the large balsamiq image is rough and 2D, and the "Let us do the processing" images are somewhat rough and 3D.
The forgot password page layout looks off to me, the recover button is displaying to the upper right of the email label.
The signup link at the bottom of the login page directs to a different account creation form than the signup links on the plans/pricing page.
"Proceed to enter credit card" seems a bit rough or robotic (can't really think of a good word to describe it honestly), maybe it could be changed to something like "Proceed to finish signup".
Although I didn't look too deeply, the docs look great!
PS: I'm not a designer, I only pretend to be one on the internet, so take all of that design advice with a grain of salt.