I have often changed the Username.
My user name is "Armstrong"

From other BOINC projects there was no problems, to change him:

Now back to "Armstrong" does not work.

A message says "Username already taken"

Armstrong is: in a relationship
Armstrong and Blank sign is assigned
T. (/ dot) Armstrong is awarded

Now T-Armstrong works

Can I User Name "Armstrong again have back
All listed" Armstrong "variants are anyway been of me.