@carl My router modem is Technicolor tc8715d. Also everyone you need to follow the manual setup for the re450. Here is link. https://fccid.io/TE7RE450/User-Manual/TE7RE450-UM-Rev2-0819-3106419

@Carl Carl, it was tp-link customer service support from Asia they connected to teamviewer.

First of all I have a technicolor router from Spectrum. You need to log into it and in Wifi you need to change the 5ghz setting to manual and set the value 149. Under local Ip Network make sure the...

If anyone is interested I have a spectrum router and re450 extender. I worked with customer service half way around the world. They solved the problem of no internet connection by changing setting in...