Google's strange ways continues. Look below. 1 referral click and 2 conversions. How's that possible? And look at the earnings. Didn't Google promise us $2 for each download of the Google pack?
first thing is that you are not allowed to show CTR, so hide it, because you can get banned! In answer to your question I think that it's simple mistake (1 click and 2 conversions). For your second question answer is that Google give not the same price for people from different countries. For example I'm from Poland and I get 0,1$ for mozilla firefox download.
edit button only stays for a limited time one click and 2 conversion doesn;t mean that both the conversion came from that single click. could be someone clicked before and downlaoded today and its showing on the report now.