@Tallboy53 

Hello,

If you don't use it anymore, you can add it into the blacklist, here is a FAQ you can refer to add it:

https://www.tp-link.com/en/support/faq/1743/

May it help and have a nice day!

@Tallboy53 Hi - thanks for that.

Tried it but I'm afraid it doesn't do the job. I can't select it from the list of devices as it doesn't appear. I entered it manually into the blacklist using the device name and MAC address, then saved it. It still appears in the list of devices on the traffic monitor list though........

It's not overly important - just an irritation really. I would have expected there to be an easy way of removing items no longer used from the traffic monitor list, but apparantly not :-)