Data usage of each device

Hi,

I just found there is something wrong with the data usage under my account.

I am wondering if there is a way to check the data usage of each device, especially hotspots usage.

Additionally, on the page of "Xfinity WiFi Hotspot Connected Devices" can I check every device including android and Linux system?

Is it possible to reset the hotspot connection so every device need to log in again to use data under my account?

Thank you!