Hi i recently signed up for your game and i have been investing Bitcoin for upgrades and auto mining.  This is a unique game web game you have made.  I like it, thank you for creating it.  Im ref 38 so i got in early(for the beta i think).  I have posted on one forum so people will sign up.  People are requesting payment proofs.  I of course am no where near the million to cash out.  I have one question in regards of cashing out.  How long does it take you to process that? 
You guys really need a design to get people attracted to the site.  Stick figures are cute but you need something better.  Hunt down a Graphics Designer.
You need to add something to the premium members.  Its just not worth what your asking IMO.  I would suggest a gold multiplier.  Also i don't really understand the selling of other resources.  The resources have little to no value to the game.  It does leave it open to alot more growth of the game however.  Using different resources and refining them. etc etc.
Anyways i want to be apart of your game and its success.