Certain "words" or groups of characters are banned for various reasons
In this case I assume it's Lenob or Nob
I do not know the reason for it, the developer sets this to prevent certain offensive names or abuses most of the time
Yeah I got one stupid response.
“What is your username”
Like wtf clearly I can’t make a user name like did you even read my complaint
In the event that it is a glitch the staff will ask for the username in order to check various things, yes
Best to continue this in helpdesk since only the developer can change those filters or fix above mentioned glitches