Help for friend trying to join pb

[Colin8]

Friend is trying to register with pb as a new member, but can't get past the statuary question, which is what does Shu stand for, reply in upper case, which he does, but comes back as invalid answer.

[sapper756]

Message me your friends name and email address and I'll try and help

[sapper756]

I've set up an account and emailed the gentleman 

Hopefully this will be successful