I surfed this autosurf and said that will pay till you reach 20 dollars. % per cent of 20 dollars (0.25 US$ each day). Then it changed the terms that it eould pay when you upgrade which costs 5 dollars and that I could withdraw what I want. I upgraded and couldn´t withdraw anything.
When I reach to the end of month it changed on what I imagine the 15th of month upgraded due to next paragraph. The upgrade last like 40 days.
Then the payout system changed to this:
On about the 15th of each month we automatically pay you your earnings from the previous calendar month IF:

The "Final balance owed for last month due mid this month" on your account page is at least HALF your CURRENT (on payout day) Member Level AND at least $20

I sent them email asking them another thing but they didn´t answer. It was about the upgrade.