I started a Bounty last week for my own question What is Karna Guru. But the period expired today and I cannot get any answers also the amount of Bounty got lost. No one got the Bounty .
So in this case, what happened to the Bounty?
Visit the help centre about bounty:
What happens when I start a bounty?
The bountied question will appear with a special indicator in all question lists, and it will also be visible on the homepage Featured tab for 7 days. Part of what you’re “paying for” with the bounty is to get additional attention for your question, over and beyond what a normal question gets. In that regard, a bounty does not guarantee a response, and reputation refunds are not available if no answers are received as a result of the bounty.
For comprehensive information to all the questions regarding bounty, I recommend visiting How does bounty system work?:
What happens if there's no answer after the bounty period?
If after the end of the bounty period a question has no answers, no bounty will be awarded and the question will no longer be featured.
Part of what you're "paying for" with a bounty is for higher question visibility and increased answerer motivation. A bounty does not guarantee a response and is not refunded if none are received.
So, if there is no answer at the end of bounty period, bounty will bot be awarded and the bounty amount will be lost and not refunded.
I see your question on Karna Guru is not answered, You may discuss in chat room where sites users may help you.