Uverse AT&T BGW210-700, TP-Link Deco AX3600, lack of ethernet ports, router/switch confusion
Please bear with me. I am very non-technical and have a brain injury. I need to upgrade my system because we have a lot of internet congestion since we have about 30-40 devices connected to our internet at any given time.
I currently have U-verse and internet 1000 with one wired DVR going to the gateway and two wireless DVR units with a WAP plugged into the gateway. I am very confused because I purchased the TP-Link Deco AX3600 Wi-Fi 6 Tri-Band Mesh System and once I received it, I realized all my ethernet ports were being used on my U-verse BWG210 Gateway.
I read on other forums here that I need to keep the wired DVR plugged into the gateway. So, do I unplug the wireless access point for the other two wireless DVRs and plug it into one of the Deco units?
I have now done it both ways, unplugging the wired DVR and plugging it into a deco unit and unplugging the WAP from the gateway and plugging that into a deco unit. While my speeds increased and I have Wi-Fi in previous dead spots, I cannot get any of my recordings or get my U-verse to pause. I get the usual "the pause command is temporarily unavailable, try again" message. I've gone through the whole process of restarting the gateway, restarting the WAP, restarting and linking each DVR to the WAP, as usual. We have constant problems with our system and have to do this at least once a week.
I did turn off both wifis and did the dynamic pass through on the gateway, following the directions here: https://forums.att.com/conversations/att-internet-equipment/bridgemode-vs-ip-passthrough-setup-information/5defbfffbad5f2f606ad5ed2
Do I need to simply add a new router to my gateway so I have more ethernet ports or is there some kind of switch to ad ethernet ports? And, if so, what MUST I leave plugged in to the U-verse Gateway?
Also, I do not understand the security that I may or may not have by adding a mesh network. Would I get more security by adding a router to the gateway? I see subscription services for the mesh system and read elsewhere that I am more vulnerable.
Any and all help is appreciated and if you have resources where I can learn more about this on my own so I don't have to ask so many questions, I am definitely interested. Thanks for reading all of this!