@RoryTurner2k 

Hi Rory, thanks for the reply, I understand most tech just fine, I think it's an incompatibility between the router and sky's implementation of IPV6.

I had a car raised with TPlink and Spotify and their level 2 support couldn't figure it out.

I have since re-installed the Sky router disabled it's WiFi, connected the Archer C6 in bridge mode via ethernet.

Everything now works fine. I am sure I can't be the only one who has had this issue as the stock Sky router is not great in my opinion.

Cheers anyway

  @Cactusdan78 I’m having trouble casting Spotify to my TV with Chromecast. The app opens, but there’s no sound. It only works when I use my phone’s hotspot. This issue started after I got a new router, and the logs don’t show anything blocked. Any ideas on how to fix it?

Hi  @enzo5  this is the exact issue I had and I tried everything I could think of, change DNS even turn off firewall etc. The only work around in the end which sort of defeats the object was to re-installed the SkY router and connect the TP-Link router in bridge mode. I disabled the WiFi on the sky router. All the odd issues I was having then disappeared. Another issue I had was if you reset a Google device, Hub or camera etc the setup failed, this now also works fine. TP Link did reply to this thread with a new version of software to try but tbh it's that much of a faff when you have a lot of devices to reset everything I haven't tried it yet. I still think it's some issue with service providers that are using IPV6 but am no expert.