Quibids increases win limits, starting a couple of days ago. Quibids had strict auction limits to ensure that the same people don't keep bidding and winning all the auctions. Win limits also help prevent collusion and fraud by some group who want to milk the system instead of playing by the rules.
However, many people found the limits to be too stringent. So Quibids has increased their monthly win limits from 8 to 12. This should give bidders more freedom bidding on the site.
In any case, you can always bid on limit busters which are not too hard to win. These limit busters help you win more than this monthly limit.