Thecr0w1987

Remove the R3 from the modem so just your PC and power is connected to it then try to access it

I did mine over WiFi not wired so it may be different I went to network and internet settings then clicked WiFi tab then manage known networks then deleted the old one 

I updated my firmware also had the same issue had to do a full reset using the pin hole reset button .Then on my  PC I had to manually remove the old network name I had before the update was installed and reconnect to the factory router name and password then went through the setup process and it worked now I can connect threw the browser and app hopefully works for you. 

Can I get granted to early access had it for the r2 can I get it for the r3 @Netduma Fraser

There is Early Access yes, it's not an automated process so has to be done manually, it's usually done within a day but I've added you now, enjoy!

In essence:
"Smart QoS replaces the Bandwidth Allocation and Traffic Prioritisation features in our existing QoS. Thanks to its knowledge of each activity’s bandwidth requirements for different levels of quality, Smart QoS automatically adjusts itself according to your preferences - minimising the amount of bandwidth each application uses while still maintaining maximum quality. 
Put simply, Smart QoS ensures every priority in your home gets exactly what it needs for the best possible experience."