Broken Link Checker works on 23 out of 24 domains

Hi Support Team,

we installed and activated Network wide the Plugin 'Broken Link Checker' which works on 23 domain but surprisingly not on the sub domain

http://superintendence.bestofthebestonly.com/

Please be so kind to find and fix the issue to have it properly working on all 24 domains.

Support access is granted.

Thanks in advance.
Cheers
Prinz