@peter_H.-123 Hi, have you checked whether VR400 has a public IP address? or whether this IP is the same as IP tested by https://whatismyip.com/? Are you able to log into the web UI of VR400 remotely...

@Sofixmcg Hi, Could you please add more details about your current issue? Did you fail to connect the Wi-Fi or the Wi-Fi Is connected but no internet? Can I have a picture of the LED lights status on...

@mfq Thank you and could you please help me get the information on the private message so that I could help you check whether this device is under warranty?

@mfq Hi, thank you for the feedback. May I know how long have you had the modem? Have you tried to reset the modem before? Please check the private message for further assistance.

And I see other users had the same confusion whether TP-Link DSL modem routers work with BT, Virgin, or SKY service. There is some information for your reference if you happen to have the same issue:...

@JackS73 Hi, I checked from the internet, and BT broadband Full Fibre 900 is based on the FTTP service, Archer VR2800( AC2800 is not the modem) is ok with it....