TP-Link Deco S4 connecting with Arris Surfboard SB8200
Bought an Arris Surfboard SB8200 Cable Modem on Prime Day to replace the Motorola unit we had before because ISP is inscreasing our speed and Motorola unit wasn't going to cut it.
Installed the Surfboard and connected the Deco S4 and while it's difficult to connect to the WiFi through the Deco, it's constantly showing no internet connection.
Understand that we need a WiFi router for use with the Surfboard because it's a cable only modem, but thought the Deco S4 would be able to provide this.
Tried tech support of the Surfboard last night and they claimed I can't have more than one Ethernet cable connected at a time due to limitations from ISP, but we had two on Motorola unit and no issues. Deco Mesh WiFi worked great when connected to the Motorola unit.
Anyone had any success with connecting to the SB8200 modem and what am I missing? Not very Tech Savvy, so any and all help that can be thrown my way will need to be in simplified terms!