1. Yesterday i posted and question but dont see it anywhere.
2. Once some one answers my question once i read it then next time i cant read it again. I should make the message as unread and only then i can read it again. Is this for every one or am i doing something wrong
Thanks for posting here with your concerns. You can see all your published questions, blog posts, answers and discussions on your profile. You can visit your profile by clicking on your name anywhere on our community, or by visiting https://people.sap.com. You can also access your profile by clicking your universal avatar (your photo) on the top right of this screen, and then clicking on your name in the drop-down. Once on your profile, you will notice that all content that you have authored are listed there.
As for your second point here, I am not sure what you are describing. Whenever any user answers your question, you will receive a notification here: https://activities.sap.com/#/notifications. As long as the answer is not deleted, you will be able to view that answer either by clicking on the link from notifications, or simply by visiting the question thread via other methods.