This is one of the biggest problems with the new program and why many affiliates are seeing drastic drops in earnings,
Another new component is in the way we track “Buy It Now” and “Bid” items. For a “Buy It Now” item, you will be compensated if a user makes a purchase within 24 hours. For “Bid” items where a bid (not necessarily the Winning Bid) is placed within 24 hours of the initial click, you are credited for winning auctions for up to 10 days, which is the maximum length that an auction can last.
The cookie only lasts for 24 hours. So a person has to click through your link and BIN or place a bid within that time period or you earn nothing.
That being said, in the good old days I was earning $2k+ a month from EPN. Now with traffic drops across the board on my sites and rev sharing platforms I write on combined with this change to the program, I am lucky to make $5 day.