How do I contact someone in StackOverflow? For example someone deleted my post and I don't understand why. How would I ask this person (the moderator)? I click on them but don't see any contact information? Should I just ask them why underneath the comment that was deleted even though it has nothing to do with the subject of the original question?
All of your deleted answers are really comments or attempts to engage in conversation. Stack Overflow doesn't work like that.
When you click the "Post Your Answer" button, we expect you to be answering the question that was asked at the top of the page, not engaging in dialog with other users or making observations such as "I have the same problem." Those kinds of answers do not help anyone.
The fact that you asked this question in the wrong place is further evidence that you don't understand how the site works.
Before you post anything else on Stack Overflow, please read: