nonono, other way around
when you sign up on store, it asks you to pick a username (that’s how “moo” could have been taken)
when you then log into the forum, for the first time, using the same email, it auto assigns you the username you picked on the store (no signing up on forum separately without going through store registration, incl username, -no creating username process when logging into forum)
so if a user registered on the store, for say coins, or just purchases, but have never logged in to the forum, -would be easy to assume that’s where the “already used” come from
guessing even if not “used” on the forum yet, it might still be “reserved” in the system?(from the store registration process), so that could be why lonin/chrono didn’t take a "store user"existing and used their name for m00 ? 
(either way we all know where the real beef is at 
, no false pretenders shall rule the cow lvl) 
