Family Safety Activity not recorded

I purchased two Dell laptops for my twin boys. I set both of them up on Family Safety at the same time. However, activity is only being recorded on ONE laptop. They are both set up exactly the same. Both accounts have "activity reporting" enabled, however, the Family Safety portal is only reporting one of them. I've tried the trouble shooting in previous posts (checking for corrupted files, etc), but nothing is helping. I'm at a complete loss b/c both accounts are set up exactly the same on both computers. I'm getting very frustrated b/c I want to monitor BOTH laptops. Please assist--I'm at my wit's end.