Good day!
I used myibidder some time ago and everything was OK but now now it looks like it does not work. For example I tried to make bids for items number 261131432242 and 261131431433. Bids via ebay are OK while myibidder was not working both via mozilla plugin or web interface.

The sniper works fine.
If you check the Status of those snipes, you will see the following reason:
"Snipe updated too late, may not execute"
It seems like you set your snipes too late. Please check the following FAQ section for more information:
http://www.myibidder.com/login/faq/4/#q5