I put a snipe for this item 5512306508. THe end price(7.50) was lower than my maxim bid(8.73). 8.73. Why I dont win?

When I went to look at the auction, I had to go thru an extra login to verify I was allowed to see. This may have something to do with it.

If eBay has made a change to these screens that AS was not aware of (eBay is always tinkering), that might cause a problem.

I'd file a support case (help page very bottom) and ask if there have been changes to bidding on adult items.

But I won other item from the same seller and same catagories. Both item are MAture category. The item won is 5512307167