Hello Neo,
Thank you for your question about a snipe. I don't see any snipes you missed fitting that description. If you can give me the item number then it can be investigated.
You can see the error that eBay returned by going to the "log" icon:
1. Go to your Completed tab.
2. Verify snipe placement times listed.
3. Click the "log" icon next to your snipe.
4. Review the full execution history.
If there is an error returned by eBay, it will be shown on the Completed Tab and in the above execution history.
I hope I answered your question to your satisfaction. Please let me know if I can help further.
bidslammer