Helix Unable to black a device

HI

I really hope someone can help me  here.

I use the Helix Fi app to manage the devices on my network and noticed that I am unable to "Pause" my daughter's wifi usage. I can see her Iphone 11 on the list of devices. I am able to select pause and it shows that her device is paused but she is still able to use the wifi. I even logged in the the Router and it shows many MAC addresses for her phone. How is that possible?

I can block all other devices in my household but for some reason, she is able to bypass the blocking.

Please help!

thanks

Milton