@broadbentr If you don't need Deco router specific features, such as parental controls, it makes sense to run Deco mesh in Access Point mode. Your ISP router will manage the whole network, Deco mesh...

@erik.olsen Most likely fix would be to configure Deco mesh to run in Access Point mode.

@NeilF My bad. I thought I spotted the trigger for that issue, and that it is static IP address outside of DHCP IP range. I was wrong, at least in your case it is not so. Apologies for wasting your...

@NeilF I am not saying you do anything wrong, I am trying to figure what is the thing that confuses Deco. I have Deco M9/M5 in AP mode, printer wired to M5 with static IP address and TV wired to M9...

@NeilF You have multiple devices on your network with static IP address out of DHCP range. Did you configure static IP addresses on devices, or through IP address reservation on ISP router? I think...

@NeilF On that Windows 10 computer which is on GUEST network, please run ipconfig /all and share its screenshot. May help with understanding what's up. Should show device IP address.