Streaming Error on new Ring Doorbell 2

Hi, I am looking for some help please. I have recently bought a brand new Ring Door Bell 2 and am struggling to get the live view function to work. It’s been 2 weeks now trawling through pages and forums trying to get this to works. The ring sets up correctly I believe and triggers movement events but just doesn’t seem to want to show live video I have tried I believe every option other than buy a new one. So what I have tried…. Reinstalled app Tried app on another iPhone Factory reset ring doorbell many times Factory reset router BT Smart Hub 2 Made sure router is set to 2.4ghz (120mb+)2 Tried to connect to mobile data on phone (4g at 30mb+) Tried web browsers and different devices at ring.com Checked and RSS is -18 Disabled firewall on router Put device in DMZ zone Set Wi-fi to channel 11 Place ring next to router Turned off Smart Setting on router I am now at a loss! Any more suggestions Thanks Rob