After that tried to select a Plan. When clicking on a plan and then clicking on Create, I get the following error: <span style="background-color: #f2dede; color: #a94442; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; text-align: center;">Username already exists, please choose another one.
Now I see I'm unable to change my username, so my question now is, How can I continue?
Your shell is ready to use. Go to xshellz.com/xpanel and select your shell for its details.