I’ve just purchased the whole home Wi-Fi kit and I have an another disc that came with my router. Should I set the whole home Wi-Fi discs app the through the whole home app or just add the 3 discs to my network through the my BT app?
If I do do it through the whole home i will have two Wi-Fi connections (my original router and the whole home Wi-Fi)
The disc you received with your router is most likely a black one, also known as a Complete WiFi Disc, the two are not compatible
Welcome to this user forum for BT Retail phone and broadband customers.
Use the Whole Home app.
I assume you are a BT Broadband customer?
The Black Complete Wi-Fi Discs are on loan, and you can request two extra ones for free, as part of the BT Complete Wi-Fi promise. Its not worth purchasing them yourself, just in case you decide to use another provider in the future.
https://www.bt.com/help/bt-halo/what-is-complete-wi-fi-
You cannot mix those with the Whole Home Discs.