Unable to connect to Ring Network

My stick-up cam has been working brilliantly for months. Last week, our street had some issues with the fibre network, which meant I had to reset my router. Since then, I have been unable to connect the camera. When I tried to simply update the wifi, I couldn't connect to the Ring Network during set up - I tried on my own iphone, my ipad and my partner's iphone. None would connect to the Ring Network - although it was showing up as an available network. I have uninstalled and reinstalled the app on my phone and I have deleted the camera to try to install again, but the same issue - can't connect to the Ring Network - so I can't get beyond that point in installing. We've had a lot of crime on our street during lockdown, so I really would like to get this sorted ASAP! Hope someone can help. Thanks!