Last week i installed an repeater next to my r7000 router. In the genie app i can't change the filter level of the different users. All users working thru the extender have the same level of security.
When i use the device in acces point mode, all workshop well.
What you will need to do is log in to your router and find the DNS server that is being used this is typically shown in the Internet settings copy this down. Next you will want to log into your Ex6150 and go to Internet setup and switch it to Use a static Ip address here you will want to change the DNS to the same DNS that the router is using. This should make the Parental controls work on the extender.
