Many times cumbersome upgrade and doing the Ascension. Because it is necessary to switch the screen. It is easy to be able to simply upgrade the main screen. But there is boring possibility and would to be able to it.
Or five kinds of Gear is affecting to how much Survival chance, or has been an increase in what percent per speed 1, please visualize the neighborhood.
The central square is for 'click to gain' view top-right for amount / upgrades. For the falling 'square' I can only assume you mean the meteorites, these can be mined for secondary currency.
Thanks for reporting, it's now fixed