My Circle showing history on wrong devices

All profiles are set up with the correct devices, yet I am seeing at times history that was not used on certain devices, but should be on another.
Also filtered sites showing up on two devices (separate profiles) at the same time.

Is it possible things get crossed with so many devices on one router? What can I do to fix this?
I need to make sure the history is correct to monitor what is actually happening. (children) They have different levels of restrictions.

Router is Netgear R7000, MyCirlce 1st Gen (iPhone app) All firmware is up to date.