The item number is 370268281080
Snipe did was not bidding. I won the item anyway, but had to do it manually.
Tried on different items, but snipe was not bidding either

Sniping does not guarantee winning. In this case, your bid must be the highest in order to win.
Your bid was $20.00, while the auction had $20 as the current bid at that moment.
You had to snipe at least $20.50 in order for your bid to be accepted.

This is not directly related, but please take a look at the following FAQ section for a similar situation:
http://www.myibay.com/login/faq/4/#q14