How do I change my name? I went to my profile and added a nickname, but I still see weistling by my picture and postings, etc. I want the new nick name there. Thanks

I don't know if you can change your name. Ask Veronika, the site owner. Send her a private message, her screen name is test. Yes, just the word "test".
To send a private message. Go to the community page and look to the right where you can search for members (not the Google search). Put test in there. Then click on her name when it pops up, it will take you to her personal page. On the left there will be a box to click to start a message. When you get a reply your Private tab will say +1. You can see that on the community page.