When you ask someone a question on ask.fm how do you know if they block you?
There is only one way to deal with this. The only way to do it is not to ask a question.
Yes, he does use askfm and it is HarryEdwardStylesHazza.
You can get more followers on askfm by following more people, answering all questions you are asked, invite friends. For more information check out askfmtrackerapp.com/how-to-get-more-followers-on-ask-fm/
We can't be sure. There are a lot of posers. The only way to know is to ask Leighton herself. I wouldn't believe if she hasn't confirmed it.
You can ask a question and answer your own question. You can then ask another question. If you ask a question that has already been answered you will see that in the asking process.