More information does not necessary drive conversion
In fact, too much information can decrease conversion because users feel overwhelmed.
"We should provide more information" is a common reaction to an underperforming landing page.
However, the volume of information is rarely the actual cause of underperformance. The more common root causes are:
- Failure to understand the core and precise objective of the page. Are you trying to maximize signups irrespective of quality? Educate users about a product? Ensure that only serious users sign up? Target a demographic?
- Failure to tailor a proper behavioral workflow for the page. It doesn't matter how much information you provide if the page is laid out so that the user cannot perceive an easy visual flow through the page.
- Failure to design a proper call to action. You may have high quality information, but failing to create a clear call to action and a clear benefit to the user for taking that action will reduce conversions.
- Failure to provide the right information. For example, you may believe the user needs to understand the features of a product, but really the user needs to understand why the product matters to begin with.
I would suggest sitting down and writing precisely what objectives the landing page has and what order of priority to give to those objectives. Then do research on how to design a successful landing page.
Specific site-reviews are beyond the scope of UX StackExchange, so I will not comment specifically for your landing page except to say that I think you are thinking too much about "what information the user needs" rather than "how to convince the user to ask for a contact".