I took a look.

Finding #1 - your mandatory menu item to CB was not published as Public (I changed is and took a screen shot if you don;t believe me).

Finding #2 - Your Agora implementation is generating warnings and error:

[code:1]
Warning: Smarty error: problem creating directory 'C:/Inetpub/vhosts' in C:\Inetpub\vhosts\wbwgaming.co.uk\httpdocs\components\com_agora\include\smarty\Smarty.class.php on line 1092

Warning: Smarty error: problem creating directory 'C:/Inetpub/vhosts' in C:\Inetpub\vhosts\wbwgaming.co.uk\httpdocs\components\com_agora\include\smarty\Smarty.class.php on line 1092

Fatal error: Smarty error: the $compile_dir 'C:\Inetpub\vhosts\wbwgaming.co.uk\httpdocs\cache\com_agora' does not exist, or is not a directory. in C:\Inetpub\vhosts\wbwgaming.co.uk\httpdocs\components\com_agora\include\smarty\Smarty.class.php on line 1092
[/code:1]

I cannot do anything further without super admin access rights, cpanel access. You should get someone to investigate deeper. Perhaps a developer from Joomlancers.

It is not a CB issue and I cannot see how installing CB would cause this.