How about React button or thank you button ?
If you get your answer and want to give a reward then we can press the Thank you button or give a react
Or what about problem solved button. After getting your answer we can press the it so the answer come to the top and highlight
Thank you for the suggestion. We will take considering to give additional features like this credit/reputation giving away or getting in future forum updates.
Thank you,
Admin
Actually we can give "Like" for individual post. Based on the help/information received we can endorse by giving like at the moment.
There's already a like button with every posts. We can hit that
I think he is talking about some rewards/points after receving the like +1 for this