I am looking to replace my old powerline adapters (10 years old, another brand) for new ones, it is still working for what I need now but keeps dropping out, but I want to expand a bit

So my current set up is

- Fiber Broadband with Vodafone WiFi Router (doesn't support Mesh) in the study room, 1 of 4 ports connected to the current powerline adapter

- all devices uses wireless except my PC that is in the sitting room connected to the other powerline adapter

What I want to do is

- Replace current powerline adapter with PA9020PKit, one in the study connected to the provider wifi router and the other in the sitting room connected to my PC

- Get WPA8631P, and connect it to TV and console in bedroom  via Ethernet, and at the same time extend the WiFi coverage upstairs

My questions are as follows

1. Does MIMO means I can plug up to 2 devices to the Ethernet port in the sitting room and would only need one port for the - adapter in the study to connect to the Vodafone WiFi router? Or do I still need 2? Which means i have to use 2 of the 4 ports in the Vodafone WiFi router?
2. - If I get the WPA8631P, does it work with my current Vodafone Wifi router since it doesn't support mesh network,
   • Does the WPA6631P behaves like an AP or an extender?
   • If I get the latest Vodafone Wifi power hub router, which supports Mesh network, will WPA8631P be compatible with it or it only supports OneMesh?
   • Same question the first, how many ports would it use for the powerline adapter that is in the study connected to the Vodafone router? If I connect a console and TV in the bedroom via Ethernet

Thanks in advance