Hi,
Do you mean the Fire Stick works for a while then shows no internet? Do you have internet access on other devices with the extender?
Is your TV connected to the extender by cable or wifi? What's the IP address of the TV when there is no internet?

Hi,
Thanks for the reply.
With the Fire Stick, I can connect to the extender and reach the Amazon TV Home Page, soon after doing that, say 2 or 3 minutes, the fire TV Stick loses it's connection and we get the error message "Internet Connection Lost" or "Cannot Reach the Home Page Please Check Your Internet Settings".
Yes I can connect reliably to the internet with my Kindle Fire tablet via the extender.
The TV is not connect to the internet, do you mean the IP address of the Fire Stick when the connection is lost?

Many Thanks,
Nick.

Hi, I think it's better to email the issue to tp-link support at support.uk@tp-link.com.