Child Restrictions Not Working

Hi,

I have an issue with my son's computer not being seen on the Xfi app or the router itself.  He is connected with an ethernet cable to one of our Pods and is connected to our internet.  However, I do not see his computer as online.  It has been this way several days and it shows he has hardly used any data over the past few weeks.  I'm not sure how to troubleshoot this issue.