U-SPEED N300 WiFi Router 2.4G Easy Setup Wireless Internet Network Router, Supports Wireless Repeater, WISP, Up to 300Mbps for Home and Office

Any suggestions for people for the next time would be welcome. You can always run a separate wireless router or AP that is used only for Enphase and always has the same SSID/password - plug that into a LAN port on whatever router/gateway your ISP supplies. Since you only need 2.4ghz and none of the latest and greatest wifi features you can buy something dirt cheap, e.g. $20 on Amazon : https://www.amazon.com/U-SPEED-Wireless-Internet-Network-Supports/dp/B0D9671WJY This will insulate you from any changes in your ISP-supplied device And obviously if you have the option, switch to wired ethernet and drop wifi altogether