Nothing happens when I click to answer a question..why?

There is a glitch with the Submit button. Refresh the page and try again. You also will not be able to if you have reached your daily limit or if you try to put a percentage sign in your posts.

This also happens to me sometimes. Just click a couple of times and see if it works. If not then copy your question and refresh the page and you usually see the answer was posted. If not you may be blocked by that person asking the question anonymously.

The user may have blocked you. Refresh the page and if it still happens, that would be the reason.