Just got the Deco XE5300. While I'm familiar with routers and networking, this is the first product I've bought that does not appear to have a PDF manual with a detailed explanation of anything or a web administration interface.

I do not wish to use the Deco app to set up this network - I prefer to configure the internet and WiFi connections, LAN security and firewall rules manually (through a web Admin interface, if any).

Do any of these interfaces exist for this product outside of the app? Or, do I need to return this item and get regular WiFi routers? Problem is that while the home is well within the coverage limits of this product, I expect issues on multiple floors - and hence the need for a mesh network.

TIA for pointers and suggestions.