It seems every devices are connected except my car. I tried to connect my car (Tesla) to my wifi but won't connect and keeps saying unable to obtain IP address. I tried to turn off beam forming, fast

I got upgraded to 400Mbps but only getting 200Mpbs as titles. when I run speed test on Deco App, it shows 400+Mbps is coming in. Is this normal to lose half of the speed on connected devices? If I run

I installed Deco and like it alot. but as deco has only one port. I have two devices that needs to be wired to it. my question is can I connect my wireless router that I was using and make it like acc