I’ve been trying to change my current username iridisma to giorgosandroulidakis. Although I follow your instructions (http://en.support.wordpress.com/change-your-username), I repeatedly get the following error message:
Sorry, that username already exists.
I assume this is because, in addition to iridisma.wordpress.com, I have also registered the blog address giorgosandroulidakis.wordpress.com.
Could you please suggest how I could change my username to giorgosandroulidakis while preserving both blog addresses?
Thanks in advance!