Video door bell will not see home wifi

I am trying to set up a new video door bell but the device does not see my home Wi-Fi to connect- it does see my neighbours though! I have a strong signal and have tried standing next to the router but no joy
Any ideas?

Hi @user51099. Are you using a VPN? What type of phone are you using for the setup? Have you tried a different phone or tablet for the setup? Are you connecting to a 2.4 or 5 GHz network? Have you tried connected to a WiFi hotspot? What specific model doorbell do you have and is it successfully entering setup mode?