Not able to change my user name to ErnieMisner

Hello, I had trouble originally registering and I was trying to use ErnieMisner as my user name, but I was finally able to register using ErnestMisner. I want to change it back to ErnieMisner but the option to do that says I cannot use ErnieMisner (meaning it is already taken, or?). Not likely that it is already taken, so how can I clear that from the username list or register using ErnieMisner? Thanks.

PS - it's not possible to have a user name with a space in it like Ernie Misner, is it?

Yikes, looks like I accidentally created 2 accounts. I want to be ErnieMisner, not ErnestMisner. Can I just delete the ErnestMisner account? Thanks.

Send Alan a message via Private threads, it’s currently 04:10AM in the UK.
dprevived.com/u/alansh/153/posts/

Thanks, I sent Alan a message.