Why i am not able to edit the post ?
Post reply are comming as answers, most of reply has no meaning for the question.... any plan to improve this website.
You are able to edit a post for next 15min once you submit the content except comment section(check image). And that is sufficient time to add/remove/edit post. However be descriptive while posting your question, Select proper tag from type ahead feature and read once before posting will be the good practice. Even if you find something to be changed after 15min grace period please add that via comment and moderators will manage for you. And avoid adding duplicate post instead.
Secondly this is an Open forum and nothing is 100% correct and efficient, So we give space for such content and if something ambiguous or improper content get moderated/removed from the forum. Thanks for your understanding...